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 283 ICD-10 codes
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.
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.
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.
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.
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.
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.
L718Other types of rosacea not specifically classified elsewhere
This code represents forms of rosacea that don't fit into the more specific rosacea categories. Rosacea is a chronic skin condition that primarily affects the face, causing redness, visible blood vessels, and sometimes bumps or pimples. This particular code is used when a patient has rosacea symptoms that don't match the typical patterns of other defined rosacea types, or when multiple rosacea features are present together.
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.
R21Rash or other non-specific skin eruption
This code is used when a patient has a rash or other skin eruption that cannot be classified into a more specific category. It covers various types of skin reactions, bumps, or changes in skin appearance where the exact cause or specific type of rash has not been determined or doesn't fit into other specific diagnostic categories.
L2089Other forms of atopic dermatitis (eczema) not specified elsewhere
This code represents atopic dermatitis, commonly known as eczema, that doesn't fit into other specific categories. Atopic dermatitis is a chronic inflammatory skin condition that causes red, itchy, and inflamed patches of skin. This particular code is used when the type of atopic dermatitis doesn't match other more specific classifications in the medical coding system.
F1320Dependence on sedative, sleep, or anti-anxiety medications without complications
This code indicates a diagnosis of dependence on medications that help with sleep (sedatives), promote sleep (hypnotics), or reduce anxiety (anxiolytics). The 'uncomplicated' designation means the dependence exists without additional medical complications like withdrawal symptoms, intoxication, or other related disorders. This represents a pattern where someone has developed a physical or psychological need for these medications and may experience difficulty functioning without them.
L710Perioral dermatitis - a skin condition causing small bumps and redness around the mouth
Perioral dermatitis is a facial skin condition that causes small, red, bumpy rashes around the mouth area. The rash typically appears as tiny papules (small raised bumps) or pustules that may be itchy or cause a burning sensation. This condition most commonly affects women between ages 20-45, though it can occur in children and men as well. The exact cause is not fully understood, but it may be triggered by topical steroids, heavy moisturizers, fluorinated toothpaste, or hormonal changes. The condition is chronic but treatable with proper medical care.
R921Calcium deposits found on breast mammogram imaging
This code indicates that calcium deposits (calcifications) were detected in breast tissue during a mammogram or other diagnostic breast imaging. Calcifications are small deposits of calcium that appear as white spots on mammograms. They are very common and are usually benign (not cancerous), but sometimes require additional evaluation to determine their significance. The presence of calcifications alone does not indicate cancer, but rather that something was seen on the imaging that needed to be documented.
E039Underactive thyroid gland, type not specified
This code indicates that your thyroid gland is not producing enough thyroid hormone (hypothyroidism), but the specific type or cause has not been determined or specified. The thyroid is a butterfly-shaped gland in your neck that produces hormones controlling your body's metabolism, energy levels, and many other functions. When it's underactive, you may experience symptoms like fatigue, weight gain, cold sensitivity, dry skin, or depression. This is a general diagnostic code used when the doctor has confirmed hypothyroidism but hasn't specified the exact subtype.
L814Other types of increased melanin pigmentation in the skin
This code represents various conditions where there is an abnormal increase in melanin (the pigment that gives skin its color) that doesn't fit into other specific categories. This can result in darker patches or areas of skin. The increased pigmentation is due to excess melanin production or accumulation in the skin cells. This is a catch-all category for melanin-related hyperpigmentation that doesn't match more specific diagnostic codes.
E782High levels of multiple types of fats in the blood
Mixed hyperlipidemia is a condition where you have elevated levels of more than one type of fat (lipid) in your blood. This typically includes high cholesterol and high triglycerides occurring together. These elevated fat levels can increase your risk of heart disease and stroke if left untreated. The condition is often managed through dietary changes, exercise, and sometimes medications to help lower these fat levels in your blood.
N6489Other specified breast disorders not classified elsewhere
This code is used for breast conditions that have specific characteristics but don't fit into other more common breast disorder categories in the medical coding system. It covers various breast problems that are clearly defined but are relatively uncommon or don't match the criteria for other specific breast disorder codes. The exact condition would be documented in detail in your medical records.
L309Skin inflammation or irritation of unknown type
This code indicates that you have dermatitis, which is a general term for inflammation of the skin that causes redness, swelling, itching, or other irritation. The 'unspecified' part means that your healthcare provider has identified that you have dermatitis but hasn't determined the specific type or cause. Dermatitis can result from allergies, irritants, infections, or other factors, and this code is used when the exact nature hasn't been identified or specified in your medical record.
F321Major depression, single episode, moderate severity
This code indicates a diagnosis of major depressive disorder during a first episode of moderate severity. Major depressive disorder is a mental health condition characterized by persistent feelings of sadness, hopelessness, and loss of interest in activities that significantly impact daily functioning. 'Single episode' means this is the first time the person has experienced major depression. 'Moderate' severity indicates the symptoms are more than mild but not as severe as they could be, typically involving some difficulty with work, social activities, or relationships, but the person can still function with effort.
R0609Other forms of difficulty breathing or shortness of breath
This code is used to document breathing difficulties or shortness of breath that don't fit into other specific categories of breathing problems. Dyspnea is the medical term for difficulty breathing or feeling short of breath. This particular code covers various types of breathing difficulties that aren't classified elsewhere in the medical coding system.
F341Persistent depressive disorder (dysthymia) - a chronic form of depression lasting at least 2 years
Dysthymic disorder, also known as persistent depressive disorder, is a chronic form of depression characterized by a depressed mood that occurs for most of the day, for more days than not, for at least 2 years in adults (1 year in children and adolescents). While the symptoms may be less severe than major depression, they are long-lasting and can significantly impact daily functioning. Symptoms may include poor appetite or overeating, insomnia or sleeping too much, low energy, low self-esteem, poor concentration, and feelings of hopelessness.
Z9109Other allergy status (not to drugs or biological substances)
This code indicates that you have a documented allergy or allergic reaction to something other than medications or biological substances. This could include allergies to environmental factors like pollen, dust, or pet dander, food allergies, or allergies to materials like latex or metals. This code is used to document your allergy history in your medical record for healthcare providers' reference.
Z6831Body Mass Index (BMI) between 31.0 and 31.9 in adults
This code indicates that your Body Mass Index (BMI) falls between 31.0 and 31.9. BMI is a measurement that uses your height and weight to assess whether you're in a healthy weight range. A BMI in this range is classified as obesity class I according to standard medical guidelines. This code is used for documentation and tracking purposes in your medical record.
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.
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.
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.
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.
Z0001Routine adult physical exam where abnormal findings were discovered
This code is used when you have a routine preventive health examination (like an annual physical or wellness visit) and your healthcare provider discovers something abnormal during the exam that requires attention or follow-up. This doesn't mean you're sick - it simply means that during your regular checkup, your doctor found something that needs to be looked at more closely, such as unusual test results, physical findings, or health indicators that fall outside normal ranges.
W19XXXDFollow-up care for a fall injury where the specific type of fall was not documented
This code is used when you are receiving follow-up medical care for injuries sustained from a fall, but the medical records do not specify exactly how or where the fall occurred. This is a subsequent encounter code, meaning it's used for visits after your initial treatment for the fall-related injury. The 'unspecified' part indicates that details about the fall circumstances (such as falling from stairs, ladder, or on the same level) were not documented in your medical record.
S92405ANon-displaced fracture of left big toe, initial encounter
This code represents a break in the bone of the left big toe where the broken pieces remain properly aligned (non-displaced). The fracture location is unspecified, meaning it could be in any part of the big toe bone. This is coded as an initial encounter, which means this is the first time you're receiving treatment for this specific injury.
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.
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.
J358Long-term diseases of the tonsils and adenoids not classified elsewhere
This code represents chronic (long-lasting) conditions affecting the tonsils and/or adenoids that don't fit into other specific categories. The tonsils are small masses of tissue at the back of your throat, and adenoids are similar tissue located behind your nose. This code covers ongoing diseases of these tissues that aren't acute infections or other specifically defined conditions.
L810Skin darkening that occurs after inflammation or injury heals
Postinflammatory hyperpigmentation is a common condition where areas of skin become darker than the surrounding skin after inflammation, injury, or irritation has healed. This darkening occurs because the inflammatory process triggers increased melanin (pigment) production in the affected area. The dark spots or patches are typically flat and can range from light brown to black in color. This condition is more common in people with darker skin tones and can result from various causes including acne, eczema, cuts, burns, or other skin trauma.
Z87891Personal history of nicotine dependence (past tobacco addiction)
This code indicates that you previously had nicotine dependence (addiction to tobacco products like cigarettes, cigars, or chewing tobacco) but are no longer currently dependent. It's used to document your medical history of tobacco addiction, which can be important for healthcare providers to know when assessing your current health risks and providing appropriate care. This code applies whether you quit on your own, used cessation aids, or received treatment to overcome the addiction.
Z1231Screening mammogram appointment for breast cancer detection
This code represents a routine screening mammogram visit specifically for detecting breast cancer in patients without symptoms. This is a preventive healthcare service used to identify potential breast cancer early, before any signs or symptoms appear. The screening is performed on patients who do not currently have breast problems or symptoms.
Z882Medical record notation indicating a known allergy to sulfonamide medications
This code is used to document in your medical record that you have a known allergy or adverse reaction to sulfonamide medications (also called sulfa drugs). Sulfonamides are a class of antibiotics and other medications that can cause allergic reactions in some people. This code helps healthcare providers know to avoid prescribing sulfa-containing medications to prevent allergic reactions. It's a documentation code rather than a billable diagnosis.
L578Other skin changes caused by long-term exposure to non-ionizing radiation
This code represents skin changes that develop from chronic (long-term) exposure to non-ionizing radiation sources. Non-ionizing radiation includes ultraviolet light, infrared radiation, microwaves, and radio waves. This code is used when the skin changes don't fit into other more specific categories of radiation-induced skin damage. Examples might include chronic skin changes from prolonged sun exposure, occupational radiation exposure, or medical treatments involving non-ionizing radiation.
T783XXASevere allergic swelling of face, lips, throat, or other body parts - first visit for this condition
Angioneurotic edema, also called angioedema, is a type of allergic reaction that causes deep swelling in the skin and mucous membranes, most commonly affecting the face, lips, eyelids, tongue, and throat. This swelling occurs beneath the surface of the skin and can develop rapidly. The 'initial encounter' designation means this is the first time you're receiving medical care for this particular episode of angioedema. This condition can be caused by allergic reactions to foods, medications, or other substances, and may require immediate medical attention especially if it affects breathing or swallowing.
D251Non-cancerous tumor in the muscle wall of the uterus
An intramural leiomyoma is a benign (non-cancerous) tumor that grows within the muscle wall of the uterus. These tumors, also commonly called fibroids, develop from the smooth muscle tissue of the uterine wall. Intramural fibroids are located within the thick muscular layer of the uterus and are the most common type of uterine fibroid. They can vary in size and may cause symptoms such as heavy menstrual bleeding, pelvic pressure, or pain, though some may cause no symptoms at all.
Z124Routine cervical cancer screening visit
This code is used when you visit a healthcare provider specifically for routine screening to check for cervical cancer. This includes preventive tests like Pap smears or HPV tests that are done when you have no symptoms and are not being treated for any cervical problems. The screening is performed to detect potential cancer or pre-cancerous changes early, when treatment is most effective.
M79675Pain in the left toe or toes
This code specifically identifies pain located in one or more toes on the left foot. It is used when a patient experiences discomfort, aching, or pain in their left toe(s) without specifying the underlying cause. The pain could be related to various conditions such as injury, inflammation, nerve issues, or other medical problems affecting the toes.
Z803Family history of breast cancer
This code indicates that you have a family history of breast cancer, meaning one or more of your blood relatives (such as mother, sister, grandmother, or aunt) has been diagnosed with breast cancer. This information is important for your healthcare providers because having a family history of breast cancer may increase your own risk of developing the disease. Your doctor uses this code to document this family history in your medical records, which helps guide screening recommendations and preventive care decisions. This is not a diagnosis of cancer for you - it's simply documenting your family medical history.
K921Black, tarry stools containing blood from upper digestive tract bleeding
Melena refers to black, tarry, sticky stools that have a distinctive foul odor. This condition occurs when blood from the upper part of the digestive system (such as the stomach or small intestine) is digested as it passes through the intestines, turning the stool dark black. The blood has been partially digested by stomach acid and enzymes, which gives it this characteristic appearance. This is different from bright red blood in stool, which typically comes from lower in the digestive tract. Melena is always considered a sign that needs medical attention as it indicates bleeding somewhere in the upper digestive system.
S92902AInitial treatment for a broken bone in the left foot (closed fracture)
This code represents the first medical visit for a fracture (broken bone) somewhere in the left foot where the bone has not broken through the skin (called a 'closed fracture'). The specific location of the break in the foot has not been determined yet, which is why it's labeled as 'unspecified.' This initial encounter typically involves examination, X-rays to identify the exact location and severity of the fracture, pain management, and determining the appropriate treatment plan. The fracture could be in any of the many bones that make up the foot, including the toes, midfoot, or heel area.
N644Breast pain or tenderness
Mastodynia is the medical term for breast pain or tenderness. This condition can affect one or both breasts and may feel like aching, burning, tightness, or sharp pain. The pain can be constant or come and go, and may be related to hormonal changes during menstrual cycles, pregnancy, or menopause. It can also be caused by breast cysts, infections, injury, or certain medications. While breast pain is often benign (not dangerous), healthcare providers may recommend imaging studies like MRI to rule out other conditions and determine the underlying cause.
R9230Abnormal findings on diagnostic imaging of breast
This code indicates that imaging tests of your breast (such as mammography, ultrasound, MRI, or CT scan) showed something unusual or abnormal. This doesn't necessarily mean cancer - abnormal findings can include many things like cysts, benign lumps, dense tissue, calcifications, or other changes that need further evaluation. Your doctor will discuss what was found and may recommend additional tests or follow-up imaging to determine what the abnormal finding means for your health.
R197Diarrhea without a specific underlying cause identified
This code is used when a patient has diarrhea (loose, watery stools occurring more frequently than normal) but the healthcare provider has not identified or specified the exact cause. Diarrhea can result from many different factors including infections, medications, dietary issues, or underlying medical conditions. This code indicates that while diarrhea is present and documented, additional testing or evaluation may be needed to determine the specific cause.
Z720Current tobacco use
This code indicates that you currently use tobacco products. It's used by healthcare providers to document tobacco use as part of your medical record. This information helps your healthcare team understand factors that may affect your health and treatment plans. Tobacco use can impact many aspects of health including wound healing, surgical outcomes, and risk for various diseases.
D225Benign moles on the chest, back, or abdomen
This code refers to melanocytic nevi, which are common benign (non-cancerous) skin growths also known as moles. These are located on the trunk area of the body, which includes the chest, back, and abdomen. Melanocytic nevi are collections of pigment-producing cells (melanocytes) that appear as brown, black, or flesh-colored spots on the skin. They are typically harmless but may be monitored or removed for cosmetic reasons or if there are changes in appearance.
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