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 452 ICD-10 codes
M9904Dysfunction of the sacral region of the spine affecting movement and alignment
This code describes a condition where there is abnormal function or restriction in the sacral region (the triangular bone at the base of the spine that connects to the pelvis). 'Segmental dysfunction' refers to problems with individual vertebral segments, while 'somatic dysfunction' indicates issues with the body's structural components including muscles, fascia, and joints. This can cause pain, stiffness, and restricted movement in the lower back and pelvic area.
M9902Dysfunction of spinal joints and muscles in the chest/upper back area
This code describes problems with how the spine moves and functions in the thoracic region (the middle part of your back, roughly from your shoulders to the bottom of your ribcage). 'Segmental dysfunction' refers to problems with individual spinal segments not moving properly, while 'somatic dysfunction' involves issues with the muscles, joints, and connective tissues in this area. This can cause pain, stiffness, or restricted movement in the upper back and chest region.
M9903Dysfunction of movement and alignment in the lower back region
This code describes a condition where there are problems with how the bones, joints, and muscles in your lower back (lumbar spine) move and work together. 'Segmental' refers to individual spine segments not moving properly, while 'somatic' refers to problems with the body's structural components like muscles, bones, and connective tissues. This can cause pain, stiffness, and reduced mobility in the lower back area.
I4891Irregular heart rhythm (atrial fibrillation) without specific type identified
This code indicates atrial fibrillation, a condition where the heart's upper chambers (atria) beat irregularly and often rapidly. The 'unspecified' designation means the specific type or pattern of atrial fibrillation has not been determined or documented. Atrial fibrillation can cause symptoms like palpitations, shortness of breath, fatigue, or chest discomfort, though some people may have no symptoms at all.
C61Prostate cancer diagnosis
This code indicates a diagnosis of prostate cancer, which is a malignant (cancerous) tumor that develops in the prostate gland. The prostate is a small gland in men that produces fluid that nourishes and transports sperm. This code is used when cancer cells have been confirmed in the prostate tissue through medical testing such as biopsy. The code itself does not specify the stage, grade, or extent of the cancer - those details would be documented separately.
M9901Dysfunction of the joints and muscles in the neck area
This code describes a condition where the joints, muscles, and other soft tissues in the cervical spine (neck region) are not functioning properly. This can involve problems with how the vertebrae move together, muscle tension or weakness, and issues with the surrounding tissues. The dysfunction may cause pain, stiffness, reduced range of motion, or other symptoms in the neck area. This is typically diagnosed through physical examination and may be related to injury, poor posture, or other factors affecting the neck's normal function.
E871Low sodium levels in the blood (hyponatremia)
This code indicates a condition where there are abnormally low levels of sodium in your blood, combined with low concentration of particles dissolved in your blood (hypo-osmolality). Sodium is an important electrolyte that helps regulate water balance in your body. When sodium levels drop too low, it can affect how your cells function and may cause symptoms like nausea, headache, confusion, or in severe cases, seizures or coma.
E7211Homocystinuria - a rare genetic disorder affecting amino acid metabolism
Homocystinuria is a rare inherited metabolic disorder where the body cannot properly break down an amino acid called homocysteine. This leads to a buildup of homocysteine in the blood and urine. The condition is caused by deficiencies in certain enzymes needed for normal protein metabolism. If left untreated, it can affect multiple body systems including the eyes, skeletal system, blood vessels, and nervous system. Early diagnosis and treatment are important for preventing complications.
Z8546Personal history of prostate cancer
This code indicates that you have previously been diagnosed with and treated for prostate cancer (malignant neoplasm of the prostate). This is used as a medical history code to document your past cancer diagnosis, which is important information for ongoing medical care and monitoring. It does not mean you currently have active cancer, but rather that you are a prostate cancer survivor.
S36039ATear in the spleen of unspecified severity (first visit for this injury)
This code indicates a laceration (tear or cut) in the spleen where the specific details about the severity or exact nature of the tear are not specified in the medical documentation. The spleen is an organ located in the upper left part of the abdomen that helps filter blood and fight infections. This is coded as an 'initial encounter,' meaning it's the first time you're receiving care for this particular spleen injury. Spleen lacerations can occur from blunt trauma to the abdomen, such as from car accidents, falls, or sports injuries.
M9905Dysfunction of the joints and muscles in the pelvic area affecting movement and alignment
This code describes a condition where the joints, muscles, and other structures in the pelvic region are not functioning properly together. This can cause problems with movement, alignment, and coordination in the pelvis area. The dysfunction may involve restrictions in joint movement, muscle imbalances, or problems with how different parts of the pelvic region work together. Patients may experience pain, stiffness, or difficulty with certain movements.
N179Sudden kidney failure of unknown cause
This code indicates that your kidneys have suddenly stopped working properly, but the specific cause has not been identified or specified. Acute kidney failure means the kidneys have rapidly lost their ability to filter waste products and excess fluid from your blood, which can be a serious medical condition requiring immediate attention and treatment.
E291Condition where the testicles don't produce enough hormones or sperm
Testicular hypofunction refers to a condition where the testicles (testes) are not working properly and fail to produce adequate amounts of male hormones (particularly testosterone) or sperm. This can affect sexual development, fertility, and overall health. The condition can be present from birth or develop later in life due to various causes including injury, infection, genetic factors, or other medical conditions.
K810Sudden inflammation of the gallbladder
Acute cholecystitis is the sudden onset of inflammation in the gallbladder, which is a small organ that stores bile to help digest fats. This condition typically causes severe abdominal pain, especially in the upper right area, and may be accompanied by fever, nausea, and vomiting. It often occurs when gallstones block the tube that drains bile from the gallbladder, though it can also happen without stones present.
Z1211Screening test to check for colon cancer
This code is used when you visit a healthcare provider specifically for a screening test to detect colon cancer before any symptoms appear. Colon cancer screening is typically recommended for adults starting at age 45-50 as part of routine preventive care. Common screening methods include colonoscopy, stool tests, or other imaging studies. This is a preventive service performed when you have no symptoms or known problems - it's done to catch potential cancer early when it's most treatable.
I4892Irregular, rapid heartbeat in the upper chambers of the heart (atria) - type not specified
Atrial flutter is a heart rhythm disorder where the upper chambers of your heart (atria) beat very rapidly and in a regular pattern, typically 250-350 times per minute. This creates an irregular heartbeat that you might feel as palpitations, chest discomfort, or shortness of breath. The 'unspecified' designation means the specific type or characteristics of the atrial flutter were not detailed in your medical record, but the condition itself has been identified.
G459Temporary interruption of blood flow to part of the brain (mini-stroke)
A transient ischemic attack (TIA) is a temporary blockage of blood flow to part of the brain, often called a 'mini-stroke.' Unlike a full stroke, the symptoms are temporary and typically resolve within 24 hours without causing permanent brain damage. However, a TIA is a serious warning sign that indicates an increased risk of having a future stroke. The 'unspecified' designation means the exact location or cause of the TIA has not been specifically identified in the medical record.
L570Actinic keratosis - rough, scaly patches on sun-damaged skin
Actinic keratosis is a common skin condition that appears as rough, scaly, or crusty patches on areas of skin that have been damaged by long-term sun exposure. These patches are typically found on sun-exposed areas like the face, ears, neck, scalp, chest, backs of hands, forearms, or lips. The patches may be tan, pink, red, or the same color as your skin. While actinic keratoses are considered precancerous lesions, they can potentially develop into squamous cell carcinoma if left untreated.
K5730Diverticulosis of large intestine without complications
This code represents diverticulosis of the large intestine (colon) without perforation, abscess, or bleeding. Diverticulosis is a condition where small pouches (called diverticula) form in the walls of the colon. In this case, these pouches are present but are not causing serious complications like holes in the intestinal wall, infections, or bleeding.
Z7982Currently taking aspirin on a long-term basis
This code indicates that you are currently taking aspirin medication on a regular, ongoing basis for an extended period of time. This is typically used when aspirin is prescribed for chronic conditions such as heart disease prevention, stroke prevention, or other cardiovascular conditions. The code helps healthcare providers track that you are on long-term aspirin therapy, which is important for coordinating your care and avoiding potential drug interactions.
R002Heart palpitations - awareness of your heartbeat
This code represents palpitations, which is the medical term for when you become aware of your own heartbeat. You might feel like your heart is beating too fast, too slow, skipping beats, or beating irregularly. Palpitations can feel like fluttering, pounding, or racing in your chest. This is a symptom code used to document that a patient is experiencing these sensations, regardless of the underlying cause.
S36039DFollow-up care for a tear in the spleen where the exact type of tear was not specified
This code is used when a patient returns for continued treatment or monitoring of a spleen injury (laceration/tear) that was previously diagnosed and treated. The spleen is an organ in the upper left part of the abdomen that helps filter blood and fight infections. A laceration means there is a tear or cut in the spleen tissue. This specific code indicates that while it's known the spleen was injured, the exact details about the type or severity of the tear were not specified in the original diagnosis. This is a 'subsequent encounter' code, meaning it's used for follow-up visits after the initial treatment.
S2242XAInitial treatment for multiple broken ribs on the left side (closed fractures)
This code represents the first medical encounter for treating multiple fractures (breaks) of the ribs on the left side of the chest. These are 'closed' fractures, meaning the broken bones have not pierced through the skin. The 'XA' indicates this is the initial encounter for active treatment of these fractures.
I214Heart attack without specific EKG changes (NSTEMI)
This code represents a type of heart attack called Non-ST Elevation Myocardial Infarction (NSTEMI). In this condition, part of the heart muscle is damaged due to reduced blood flow, but it doesn't show the characteristic ST elevation pattern on an electrocardiogram (EKG). Blood tests will show elevated cardiac enzymes indicating heart muscle damage. This is a serious medical emergency requiring immediate treatment, though it may be less extensive than other types of heart attacks.
Z9181Medical history of previous falls
This code indicates that you have a documented history of falling in the past. It's used by healthcare providers to note this important medical history information in your records. Having a history of falls is significant because it may indicate an increased risk for future falls and helps doctors assess your overall health status and mobility concerns. This code helps healthcare teams be aware of your fall history when planning your care and may prompt them to evaluate factors that could contribute to falls, such as balance issues, medication effects, or environmental hazards.
K8000Gallstones with acute gallbladder inflammation, no blockage
This code indicates the presence of gallstones (calculi) in the gallbladder along with acute cholecystitis, which is sudden inflammation of the gallbladder. The condition does not involve obstruction of the bile ducts. Acute cholecystitis typically causes severe abdominal pain, nausea, vomiting, and fever. This is a common condition that often requires prompt medical treatment.
R269Problems with walking or movement that are not specifically identified
This code is used when a patient has difficulty with walking, moving around, or maintaining normal gait (walking pattern), but the specific cause or type of problem has not been determined or specified. It covers general mobility issues where the exact nature of the walking or movement problem needs further evaluation or doesn't fit into a more specific category.
E538Deficiency of specific B vitamins (other than B12, folate, thiamine, riboflavin, niacin, or B6)
This code indicates a deficiency in one or more B-group vitamins that are not covered by other specific deficiency codes. The B vitamin group includes several essential nutrients that help your body convert food into energy and maintain healthy nerve function. This particular code applies to deficiencies in B vitamins like biotin (B7), pantothenic acid (B5), or other less commonly deficient B vitamins. Symptoms may include fatigue, skin problems, hair loss, or neurological issues depending on which specific B vitamin is deficient.
R2990Unspecified nervous system symptoms or signs
This code is used when a patient has symptoms or signs related to the nervous system (which includes the brain, spinal cord, and nerves throughout the body), but the specific condition or exact nature of the symptoms cannot be determined or specified at the time of coding. This is a very general code that indicates something is affecting the nervous system, but more specific testing or evaluation may be needed to determine the exact cause.
Z602Medical documentation of problems related to living alone
This code is used by healthcare providers to document when a patient's living situation (specifically living alone) is contributing to their health concerns or affecting their medical care. This might include situations where living alone creates challenges for medication management, recovery from illness or surgery, safety concerns, or social isolation that impacts mental or physical health. This is a documentation code that helps healthcare teams understand important social factors that may influence a patient's health and treatment planning.
K8020Gallstones without inflammation or blockage
This code indicates the presence of gallstones (calculi) in the gallbladder without any accompanying inflammation of the gallbladder (cholecystitis) or blockage of the bile ducts. Gallstones are hardened deposits that form in the gallbladder, which is a small organ that stores bile to help digest fats. In this case, the stones are present but not causing inflammation or obstruction of bile flow.
H25813Age-related cataracts affecting both eyes with multiple types present
This code indicates that you have age-related cataracts in both eyes, where multiple different types of cataracts are present together (combined forms). Age-related cataracts are a common condition where the natural lens of the eye becomes cloudy over time, typically affecting people as they get older. Having 'combined forms' means that more than one type of cataract is present simultaneously, such as nuclear sclerosis (hardening of the lens center) along with cortical changes (clouding around the lens edges) or posterior subcapsular changes (clouding at the back of the lens).
R262Difficulty walking that doesn't fit into other specific walking problem categories
This code is used when a patient has trouble walking, but the specific cause or type of walking difficulty doesn't match other more specific diagnostic codes. It covers various walking problems that healthcare providers observe or patients report, but that need further evaluation to determine the exact cause. This is a symptom code rather than a final diagnosis, meaning it describes what the patient is experiencing rather than identifying the underlying medical condition causing the walking difficulty.
E611Iron deficiency - a condition where the body doesn't have enough iron
Iron deficiency occurs when your body lacks sufficient iron to maintain normal bodily functions. Iron is essential for making healthy red blood cells that carry oxygen throughout your body. This condition can range from mild iron depletion to iron deficiency anemia. Common symptoms may include fatigue, weakness, pale skin, shortness of breath, and cold hands and feet. Iron deficiency can be caused by inadequate dietary intake, blood loss, increased iron needs during pregnancy or growth periods, or poor iron absorption.
H02883Meibomian gland dysfunction of left upper eyelid
This code refers to a condition affecting the meibomian glands in the left upper eyelid. Meibomian glands are tiny oil glands located along the edge of the eyelids that produce oils to help keep the eye surface lubricated. When these glands don't function properly, it can lead to dry eyes, irritation, and discomfort. This specific code indicates the problem is located in the meibomian glands of the left upper eyelid.
W010XXAInitial treatment for a fall on the same level due to slipping or tripping, without hitting an object
This code is used when a patient receives initial medical care for injuries sustained from falling on the same level (not from a height) after slipping or tripping, where the person did not strike against any object during the fall. This type of fall typically occurs when someone loses their footing on a surface due to conditions like wet floors, uneven ground, or obstacles, but doesn't collide with furniture, walls, or other objects while falling.
S2241XAInitial treatment for multiple broken ribs on the right side (closed fractures)
This code represents the first medical encounter for treating multiple fractured (broken) ribs on the right side of the chest. These are closed fractures, meaning the broken bones have not pierced through the skin. Multiple rib fractures typically occur from significant trauma such as car accidents, falls, or direct blows to the chest. The 'XA' indicates this is the initial encounter for active treatment of these fractures.
S80212AScrape or scratch injury to the left knee (first visit for this injury)
This code represents an abrasion (scrape or scratch) on the left knee during the initial encounter with a healthcare provider for this specific injury. An abrasion is a superficial wound where the top layer of skin has been scraped or rubbed off, typically caused by friction against a rough surface. The 'initial encounter' designation means this is the first time you're receiving medical care for this particular knee abrasion.
S2249XDFollow-up visit for multiple rib fractures that are healing normally
This code is used for a subsequent healthcare encounter (follow-up visit) for a patient who previously had multiple rib fractures on an unspecified side of the chest. The 'XD' extension indicates this is for routine healing, meaning the fractures are healing as expected without complications. This code would be used during follow-up appointments to monitor the healing progress of the rib fractures.
Z20822Contact with or exposure to viral hepatitis
This code indicates that you have been in contact with or exposed to someone with viral hepatitis. This is used when you haven't developed hepatitis yourself, but you've had contact with someone who has it or been in a situation where exposure occurred. This code helps healthcare providers track potential exposures and determine if preventive measures or monitoring are needed.
M3500Sicca syndrome (dry eyes and mouth) without further specification
Sicca syndrome is a condition characterized by dryness of the mucous membranes, particularly affecting the eyes and mouth. This code is used when a patient has been diagnosed with sicca syndrome but the specific type or underlying cause has not been determined or specified. The condition involves reduced production of tears and saliva, leading to dry eyes (keratoconjunctivitis sicca) and dry mouth (xerostomia). This can cause discomfort, difficulty swallowing, dental problems, and eye irritation.
R7989Other abnormal blood test results not classified elsewhere
This code is used when blood chemistry tests show abnormal results that don't fit into other specific diagnostic categories. Blood chemistry tests measure various substances in your blood like proteins, enzymes, minerals, and other chemicals. When these tests show unusual values that your doctor needs to document but that don't match other specific diagnostic codes, this general code is used. The abnormal findings could relate to various blood components and may require further testing or monitoring to determine their significance.
K429A hernia (bulge) at the belly button that is not blocked or cutting off blood supply
An umbilical hernia occurs when part of the intestine or fatty tissue pushes through a weak spot in the abdominal muscles near the belly button, creating a visible bulge. This specific code indicates that the hernia is not obstructed (meaning the contents can move freely in and out) and there is no gangrene (tissue death due to lack of blood supply). Umbilical hernias are common in infants and may also occur in adults, particularly women who have been pregnant or people who are overweight.
S46012AStrain of the rotator cuff muscles and tendons in the left shoulder - initial encounter
This code represents an injury to the rotator cuff, which is a group of muscles and tendons that surround the shoulder joint and help stabilize it. A strain means these tissues have been stretched or torn, typically from overuse, sudden movement, or trauma. This is the first time this particular injury is being treated or diagnosed. The rotator cuff is essential for shoulder movement and stability, and strains can cause pain, weakness, and limited range of motion in the affected shoulder.
H31091Scar tissue in the back of the right eye (chorioretinal scar)
This code indicates the presence of scar tissue that has formed in the chorioretinal layers of the right eye. The choroid and retina are layers at the back of the eye that are important for vision. When these tissues are damaged by injury, infection, inflammation, or other conditions, scar tissue can form as part of the healing process. This scarring can potentially affect vision depending on its location and size. The code specifically refers to 'other' types of chorioretinal scars, meaning it's not one of the more specifically defined scar types in the coding system.
S6440XDFollow-up care for a previously treated nerve injury in a finger
This code is used for subsequent encounters (follow-up visits) after initial treatment of an injury to a digital nerve in a finger. Digital nerves are small nerves that provide feeling to the fingers. This specific code indicates that the exact finger affected was not specified in the medical documentation, and this is a return visit for ongoing care, monitoring, or treatment of the previously diagnosed nerve injury.
Z01419Routine gynecological examination with normal findings
This code represents a routine gynecological examination where no abnormal findings were discovered during the visit. This is a preventive care encounter that includes a standard gynecological exam such as a pelvic exam, breast exam, and other routine screening procedures. The 'without abnormal findings' designation means that all examination results were within normal limits and no concerning issues were identified during the visit.
S2249XAMultiple broken ribs, unspecified side - initial treatment for closed fractures
This code represents the initial medical encounter for treating multiple rib fractures where the specific side (left or right) is not documented. The fractures are 'closed,' meaning the broken bones have not pierced through the skin. This code is used when a patient first receives treatment for having broken multiple ribs, typically from trauma such as a fall, car accident, or sports injury.
Z48815Follow-up visit after digestive system surgery
This code is used when you have a scheduled follow-up appointment or encounter with your healthcare provider after having surgery on your digestive system. This includes routine post-surgical care, checking how you're healing, removing stitches or staples, wound care, or monitoring your recovery progress. The digestive system includes organs like the stomach, intestines, liver, gallbladder, and pancreas.
I639Stroke (brain tissue damage due to blocked blood flow), type not specified
This code indicates that you have had a cerebral infarction, which is the medical term for a stroke caused by blocked blood flow to part of the brain. When blood flow is interrupted, brain tissue in that area becomes damaged or dies. The 'unspecified' designation means that the medical records don't specify the exact type or location of the stroke, or the specific blood vessel that was affected. This is a serious medical condition that requires immediate medical attention and ongoing care.
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