ICD-10 Codes Explained
International Classification of Diseases codes for diagnoses and conditions. Understand what each diagnosis code means on your medical bills.
Showing 50 of 472 ICD-10 codes
J322Chronic inflammation of the ethmoid sinuses
This code represents chronic ethmoidal sinusitis, which is a long-term inflammation of the ethmoid sinuses. The ethmoid sinuses are small air-filled spaces located between your nose and brain, behind the bridge of your nose. When these sinuses become chronically inflamed, it can cause ongoing symptoms like nasal congestion, facial pressure, reduced sense of smell, and post-nasal drip. Unlike acute sinusitis which lasts a short time, chronic sinusitis persists for 12 weeks or longer despite treatment attempts.
Z8679Personal history of other heart and blood vessel diseases
This code indicates that you have a documented medical history of heart or blood vessel (circulatory system) diseases that don't fall into other specific categories. This is used to track your medical background and may influence current treatment decisions. It covers past conditions affecting your heart, arteries, veins, or other parts of your circulatory system that aren't classified under more specific history codes.
M5030Wear and tear of cervical spine discs in the neck region
This code represents degeneration (breakdown or wear and tear) of the discs between the vertebrae in the cervical spine (neck region). The discs act as cushions between the bones of the spine, and over time they can deteriorate due to aging, injury, or other factors. This specific code is used when the disc degeneration doesn't fit into other more specific categories and the exact level of the cervical spine is not specified in the medical documentation.
R430Complete loss of smell (anosmia)
This code represents anosmia, which is the complete inability to smell. This condition means you cannot detect any odors or scents. Anosmia can be temporary or permanent and may result from various causes including infections, nasal blockages, head injuries, or other medical conditions. It has gained particular attention as a symptom associated with COVID-19, though it can occur for many other reasons.
E669Obesity diagnosis without specific type or cause identified
This code indicates a medical diagnosis of obesity where the healthcare provider has determined that a patient's body weight significantly exceeds what is considered healthy for their height, but has not specified the particular type of obesity or its underlying cause. Obesity is typically defined as having a body mass index (BMI) of 30 or higher. This general code is used when the medical record documents obesity but doesn't provide additional details about severity level, cause, or specific subtype.
H93299Other abnormal hearing perceptions in an unspecified ear
This code represents unusual or abnormal ways of hearing sounds that don't fit into other specific categories of hearing disorders. It covers various types of altered sound perception, such as hearing sounds differently than normal, experiencing distorted hearing, or other atypical auditory experiences. The code is used when the specific ear affected (left or right) is not documented or specified.
N6012Diffuse cystic mastopathy (fibrocystic breast condition) affecting the left breast
This code refers to diffuse cystic mastopathy of the left breast, which is a benign (non-cancerous) breast condition. Also known as fibrocystic breast disease, this condition involves the development of fluid-filled cysts and fibrous tissue throughout the breast tissue. It's a common, non-malignant condition that can cause breast tenderness, lumpiness, or pain, particularly before menstrual periods. The term 'diffuse' means the condition affects multiple areas of the breast rather than being localized to one spot. This is specifically documented for the left breast.
E785High levels of fats (lipids) in the blood, type not specified
This code indicates that blood tests have shown elevated levels of fats (lipids) such as cholesterol and triglycerides in your bloodstream, but the specific type of lipid disorder has not been identified or specified. Hyperlipidemia means having too much fat in the blood, which can increase the risk of heart disease and stroke if left untreated. The 'unspecified' designation means your healthcare provider has documented elevated lipid levels but hasn't yet determined or documented the specific subtype of the condition.
R4781Slurred speech - difficulty speaking clearly with words that sound unclear or mumbled
This code represents slurred speech, which is a symptom where a person has difficulty speaking clearly. The words may sound unclear, mumbled, or difficult to understand. Slurred speech can affect the clarity and articulation of words, making communication challenging. This is a symptom code that describes what is observed, not a specific diagnosis of an underlying condition.
I83892Varicose veins in the left leg with complications other than ulcer or inflammation
This code indicates varicose veins (enlarged, twisted veins) in the left lower leg that have developed complications beyond simple varicose veins. These complications exclude ulcers or inflammation, but may include other issues such as bleeding, blood clots, or skin changes. Varicose veins occur when vein valves don't work properly, causing blood to pool and veins to become enlarged and twisted.
Z6830Body Mass Index (BMI) between 30.0-30.9 in adults
This code indicates that your Body Mass Index (BMI) falls between 30.0 and 30.9. BMI is a measurement that uses your height and weight to determine if you're in a healthy weight range. A BMI in this range (30.0-30.9) is classified as obesity class I according to medical standards. This is a diagnostic code used to document your current BMI status for medical record keeping and may be relevant for health monitoring, treatment planning, or insurance purposes.
E71120A rare genetic disorder where the body cannot properly break down certain proteins and fats
Methylmalonic acidemia is an inherited metabolic disorder caused by a deficiency in enzymes needed to process certain amino acids (building blocks of proteins) and odd-chain fatty acids. When these substances cannot be properly broken down, methylmalonic acid builds up in the blood and urine, which can be toxic to the body. This condition is present from birth and can affect multiple organ systems including the brain, liver, and kidneys. Symptoms may include developmental delays, feeding difficulties, vomiting, lethargy, and in severe cases, life-threatening complications.
E6601Morbid (severe) obesity due to excess calories
This code represents a diagnosis of morbid obesity, also called severe obesity, that is specifically caused by consuming too many calories. Morbid obesity is a serious medical condition where a person's weight significantly exceeds what is considered healthy for their height and poses substantial health risks. This particular code is used when the obesity is determined to be the result of excess caloric intake rather than other underlying medical conditions.
L42Pityriasis rosea - a common, temporary skin rash with pink, scaly patches
Pityriasis rosea is a common, harmless skin condition that causes a distinctive rash. It typically begins with a single, larger patch (called a 'herald patch') followed by smaller pink or salmon-colored, oval-shaped patches with fine scales. The rash often appears in a Christmas tree pattern on the back and chest. This condition is temporary and usually resolves on its own within 6-12 weeks without treatment. While the exact cause is unknown, it's believed to be triggered by a viral infection and is not contagious once the rash appears.
B029Shingles (herpes zoster) without complications
This code represents a diagnosis of shingles, also known as herpes zoster, that occurs without any complications. Shingles is a viral infection that causes a painful rash and is caused by the same virus that causes chickenpox. When coded as 'without complications,' it means the shingles outbreak is straightforward and has not led to additional medical problems such as nerve pain that persists after the rash heals, eye involvement, or other secondary conditions.
S9032XABruising of the left foot - first visit for this injury
This code represents a contusion (bruise) of the left foot during the initial medical encounter for this specific injury. A contusion occurs when small blood vessels under the skin are damaged from impact or trauma, causing discoloration, swelling, and tenderness without breaking the skin. The 'initial encounter' designation means this is the first time you're receiving medical care for this particular foot injury.
R112Nausea with vomiting, cause not specified
This code indicates that a patient is experiencing both nausea (feeling sick to your stomach) and vomiting (throwing up), but the underlying cause has not been determined or specified. This is a symptom-based diagnosis used when the specific reason for the nausea and vomiting is unknown or has not yet been identified through medical evaluation.
S199XXAUnspecified neck injury, first visit for treatment
This code represents an injury to the neck area where the specific type or nature of the injury has not been determined or documented. The 'initial encounter' designation means this is the first time you are receiving medical care for this particular neck injury. This is a general code used when doctors know there is a neck injury but need more time, tests, or evaluation to determine exactly what type of injury occurred.
B961Klebsiella pneumoniae bacteria identified as the cause of a disease classified elsewhere
This code indicates that laboratory testing has identified Klebsiella pneumoniae bacteria as the specific cause of an infection or disease. Klebsiella pneumoniae is a type of bacteria that can cause various infections including pneumonia, urinary tract infections, bloodstream infections, and wound infections. This code is used alongside another primary diagnosis code that describes the actual infection or disease. It helps healthcare providers document the specific bacterial cause, which is important for determining the most effective antibiotic treatment.
L249Skin irritation and inflammation caused by direct contact with an irritating substance, but the specific cause is not identified
This code represents irritant contact dermatitis where the skin has become red, inflamed, itchy, or developed a rash due to direct contact with an irritating substance (like chemicals, soaps, or other materials), but the healthcare provider has not specified or identified the exact substance that caused the reaction. Unlike allergic contact dermatitis, this type occurs from direct chemical damage to the skin rather than an immune system response.
L603Abnormal nail growth or appearance
Nail dystrophy refers to abnormal development, growth, or appearance of fingernails or toenails. This can include changes in nail thickness, shape, color, texture, or growth patterns. The nails may become thickened, thin, brittle, ridged, discolored, or have other structural abnormalities. This condition can affect one or multiple nails and may be caused by various factors including infections, injuries, genetic conditions, or underlying health issues.
Z9842History of cataract surgery on the left eye
This code indicates that you have previously had cataract extraction surgery on your left eye. A cataract is a clouding of the natural lens in your eye that can cause blurry vision. Cataract extraction is a common surgical procedure where the cloudy lens is removed and typically replaced with an artificial lens implant. This code is used in medical records to document that this surgery has already been completed on your left eye, which is important information for your ongoing eye care and any future medical treatments.
H02889Other specified disorders of eyelid
This code represents various specific eyelid disorders that don't fit into other more common categories. The eyelid is the thin fold of skin that covers and protects your eye. This code covers conditions that affect the eyelid's structure, function, or appearance in ways that are medically significant but don't match the criteria for more commonly diagnosed eyelid problems. The specific disorder would be documented in your medical records along with this code.
B9620E. coli bacteria identified as the cause of a disease classified elsewhere in medical records
This code indicates that Escherichia coli (E. coli) bacteria has been identified as the underlying cause of a disease or condition that is primarily classified under a different medical code. E. coli is a type of bacteria that can cause various infections throughout the body. This particular code is used when the specific strain or type of E. coli is not specified, and it's being documented as the causative agent for another diagnosed condition.
N393Stress incontinence - involuntary urine leakage during physical activity or pressure
Stress incontinence is a condition where urine leaks involuntarily when pressure is put on the bladder during physical activities like coughing, sneezing, laughing, exercising, or lifting heavy objects. This happens when the muscles that support the bladder and control urination become weakened or damaged. It can affect both men and women, though it's more common in women, especially after childbirth or with aging. The condition is treatable through various methods including pelvic floor exercises, lifestyle changes, medical devices, or surgical procedures.
E663Medical diagnosis indicating body weight above normal range but below obesity threshold
This code indicates that a healthcare provider has documented that your body weight is above the normal or healthy range for your height and build, but has not reached the level classified as obesity. Overweight is typically defined as having a Body Mass Index (BMI) between 25-29.9. This diagnosis may be used during routine checkups, weight management consultations, or when weight is a factor in other health conditions. It serves as documentation for medical records and may be relevant for treatment planning or health monitoring.
M779Inflammation or irritation of tissue where tendons or ligaments attach to bone, location not specified
Enthesopathy refers to a condition where the tissues that connect tendons or ligaments to bones become inflamed, irritated, or damaged. This code indicates that such a condition is present but the specific location in the body and exact type of enthesopathy has not been specified. Common symptoms may include pain, stiffness, and tenderness at the attachment points of tendons and ligaments to bones.
M9908Segmental and somatic dysfunction of the rib cage
This code describes a condition where there is abnormal movement or positioning of the ribs and related muscles, joints, or connective tissues in the chest area. Segmental and somatic dysfunction refers to problems with how the spine segments and body structures move and function together. In the rib cage area, this can cause restricted movement, muscle tension, or misalignment that may lead to pain, stiffness, or breathing difficulties. This condition is commonly treated with chiropractic care or osteopathic manipulative treatment to restore normal movement and function.
S2242XDFollow-up visit for multiple broken ribs on the left side that are healing normally
This code is used for subsequent encounters (follow-up visits) when a patient previously suffered multiple fractures (breaks) of the ribs on the left side, and the fractures are now healing as expected without complications. This is not for the initial treatment of the injury, but rather for routine follow-up care to monitor the healing process.
I341Mitral valve prolapse not caused by rheumatic heart disease
This code indicates a condition where the mitral valve (one of the heart's four valves) doesn't close properly, causing the valve leaflets to bulge back into the left atrium during heartbeats. This specific code applies when the prolapse is not caused by rheumatic heart disease, which means it's typically a structural abnormality that can be congenital (present from birth) or develop over time. Many people with mitral valve prolapse have no symptoms, while others may experience chest pain, palpitations, or fatigue.
M25572Pain in left ankle and joints of left foot
This code represents pain affecting the left ankle and the joints in the left foot. It is used to document when a patient experiences discomfort, aching, or pain specifically in these areas of the left lower extremity. The pain may involve the ankle joint itself as well as the various small joints within the left foot, such as those connecting the toes, midfoot, and other foot structures.
S9002XABruising of the left ankle - first visit for this injury
This code represents a contusion (bruise) of the left ankle during the initial encounter with a healthcare provider for this specific injury. A contusion occurs when small blood vessels under the skin are damaged from impact or trauma, causing bleeding under the skin that appears as bruising, swelling, and discoloration. The 'initial encounter' designation means this is the first time you're receiving medical care for this particular ankle injury.
L259Skin inflammation from contact with an irritant or allergen, cause not specified
This code represents contact dermatitis, which is inflammation of the skin that occurs when it comes into contact with certain substances. Contact dermatitis can be caused by irritants (like harsh chemicals or soaps) or allergens (substances you're allergic to). This particular code is used when the healthcare provider has diagnosed contact dermatitis but hasn't specified what type it is or what caused it. Symptoms typically include redness, itching, swelling, and sometimes blistering of the affected skin area.
Z743Medical code indicating a patient requires continuous supervision for their safety and care
This ICD-10 code is used to document when a patient has a medical need for continuous supervision. This means the patient requires ongoing monitoring and oversight for their health, safety, or wellbeing due to their medical condition or circumstances. The supervision may be needed to prevent harm, ensure proper care is received, or monitor for changes in the patient's condition. This code is typically used for administrative and documentation purposes to justify the level of care being provided.
S3991XAUnspecified abdominal injury - first medical visit
This code indicates an injury to the abdomen (belly area) where the specific type or exact nature of the injury has not been determined or specified. The 'initial encounter' means this is the first time you are receiving medical care for this particular injury. This is a general code used when doctors know there is an abdominal injury but need more time, tests, or evaluation to determine the exact type of injury.
K5190Ulcerative colitis without complications
This code represents ulcerative colitis, a chronic inflammatory bowel disease that causes inflammation and ulcers in the lining of the large intestine (colon) and rectum. The 'unspecified' designation means the exact type or extent of ulcerative colitis is not further detailed in the medical record. 'Without complications' indicates that at the time of this diagnosis, there are no additional serious complications like bleeding, perforation, or other severe issues associated with the condition.
S36031SLong-term effects or complications from a previous moderate tear of the spleen
This code represents the ongoing effects, complications, or conditions that result from a previous moderate laceration (tear) of the spleen. The spleen is an organ in the upper left part of the abdomen that helps filter blood and fight infections. A moderate laceration means there was a significant tear in the spleen tissue that was more serious than a minor injury but less severe than a major rupture. The 'sequela' part means this code is used when the patient is being treated for problems that developed as a result of that previous spleen injury, rather than for the original injury itself.
R609Swelling or fluid retention in body tissues, cause not specified
Edema refers to the abnormal accumulation of fluid in body tissues, causing swelling. This code is used when a patient has documented swelling or fluid retention, but the underlying cause has not been determined or specified. Edema can occur in various parts of the body including the legs, feet, hands, face, or throughout the body. The swelling may be visible as puffiness or can be detected when pressing on the skin leaves a temporary indentation.
M25472Fluid buildup in the left ankle joint
This code indicates there is an abnormal accumulation of fluid within the left ankle joint space. Joint effusion occurs when excess fluid builds up in the joint, which can cause swelling, stiffness, and discomfort. This fluid buildup can result from various causes including injury, inflammation, infection, or underlying joint conditions. The effusion specifically affects the left ankle joint.
I8393Enlarged, twisted veins in both legs that cause no symptoms
This code describes varicose veins that are present in both lower legs or feet but are not currently causing any symptoms like pain, swelling, or discomfort. Varicose veins are enlarged, twisted veins that occur when the valves in the veins don't work properly, causing blood to pool. Even though these veins may be visible under the skin, they are not causing any noticeable problems at this time.
I83222Varicose veins in left leg with ulcer on calf and inflammation
This code describes a condition where you have varicose veins (enlarged, twisted veins) in your left lower leg that has progressed to include both an open sore (ulcer) specifically on the calf area and inflammation of the surrounding tissue. Varicose veins occur when vein walls weaken and blood pools, causing the veins to bulge. When complicated by ulceration and inflammation, this represents a more advanced stage of venous disease that requires medical attention.
H02054Inward-growing eyelashes on the left upper eyelid without eyelid turning inward
This condition involves eyelashes on the left upper eyelid that grow inward toward the eye, causing them to rub against the eyeball or inner eyelid. Unlike entropion (where the entire eyelid turns inward), in this case only the individual lashes are misdirected while the eyelid position remains normal. This can cause eye irritation, scratching sensation, tearing, and potential damage to the cornea if left untreated.
H259Age-related cataract, type not specified
This code indicates you have a cataract (clouding of the natural lens in your eye) that is related to aging, but the specific type or stage of the cataract has not been specified in your medical record. Cataracts are very common as people get older and typically develop gradually, causing blurry vision, increased glare sensitivity, and difficulty seeing in low light. The lens becomes cloudy over time, which interferes with clear vision.
H8110Benign paroxysmal vertigo (brief episodes of dizziness) affecting an unspecified ear
This code represents benign paroxysmal vertigo, which is a condition causing brief episodes of spinning dizziness (vertigo). The episodes are typically triggered by specific head movements and are considered 'benign' because they are not life-threatening. 'Paroxysmal' means the symptoms come in sudden attacks or episodes. In this case, the specific ear affected (left or right) is not specified in the medical documentation.
T1511XAForeign object stuck in the conjunctival sac of the right eye, initial visit
This code indicates that a foreign object (such as dust, debris, an eyelash, or other small particle) has become lodged in the conjunctival sac of the right eye. The conjunctival sac is the space between the eyelid and the eyeball, lined by a thin membrane called the conjunctiva. This is coded as an initial encounter, meaning it's the first time this specific injury is being treated by a healthcare provider.
Z043Medical visit for examination and observation after an accident (not transport-related)
This code is used when you visit a healthcare provider for examination and observation following an accident that was not related to transportation (such as a car, motorcycle, or bicycle accident). This includes accidents like falls, sports injuries, workplace incidents, or other non-transport accidents. The visit is specifically for monitoring and evaluating your condition after the accident occurred, even if no immediate injury was apparent.
E7219Other rare disorders affecting how the body processes sulfur-containing amino acids
This code represents uncommon genetic conditions that affect how your body breaks down and uses certain amino acids (protein building blocks) that contain sulfur. These are typically inherited disorders where specific enzymes needed for normal amino acid metabolism don't work properly. This is a 'catch-all' code used when the specific disorder doesn't fit into other more defined categories of sulfur amino acid metabolism disorders.
I517Enlarged heart (cardiomegaly)
Cardiomegaly means your heart is larger than normal size. This enlargement can affect the heart's ability to pump blood effectively. It can be caused by various conditions such as high blood pressure, heart valve problems, heart muscle disease, or other underlying health issues. The enlarged heart may be detected through chest X-rays, echocardiograms, or other imaging tests.
J0141Acute recurrent pansinusitis - repeated episodes of sudden inflammation in all sinus cavities
This code represents acute recurrent pansinusitis, which means you have experienced repeated episodes of sudden, severe inflammation affecting all of your sinus cavities (the air-filled spaces around your nose, cheeks, and forehead). 'Acute' means the symptoms come on suddenly and are severe, 'recurrent' means this has happened multiple times, and 'pansinusitis' means all of your sinus cavities are involved. This condition typically causes symptoms like facial pain and pressure, thick nasal discharge, congestion, reduced sense of smell, and sometimes fever. The recurrent nature suggests this is an ongoing problem that keeps coming back rather than a single episode.
D239Non-cancerous skin growth, type and location not specified
This code represents a benign (non-cancerous) skin tumor or growth where the specific type of growth and its exact location on the body have not been specified in the medical documentation. Benign skin neoplasms are abnormal tissue growths that do not spread to other parts of the body and are generally not life-threatening. Common examples include moles, skin tags, lipomas, or cysts, but this particular code is used when the medical record doesn't provide enough detail to assign a more specific code.
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