ICD-10 Codes Explained
International Classification of Diseases codes for diagnoses and conditions. Understand what each diagnosis code means on your medical bills.
Showing 38 of 488 ICD-10 codes
A499A bacterial infection that hasn't been specifically identified yet
This code indicates that you have a bacterial infection, but the specific type of bacteria causing the infection hasn't been determined or specified. Bacterial infections occur when harmful bacteria enter your body and multiply, potentially causing symptoms like fever, fatigue, or localized pain and swelling. Your healthcare provider knows you have a bacterial infection (likely confirmed through lab tests), but may need additional testing to identify the exact type of bacteria involved. This code is often used when initial test results show bacterial infection but more specific testing is still pending or when the infection is being treated before complete identification.
Z136Routine heart health screening visit
This code represents a preventive healthcare visit specifically for screening to check for heart and blood vessel problems before symptoms appear. During this type of encounter, your healthcare provider will evaluate your cardiovascular health through various tests and examinations. The goal is to detect potential heart conditions early, when they're most treatable. This is typically part of routine preventive care and may include tests like blood pressure measurements, cholesterol checks, EKGs (heart rhythm tests), or other cardiovascular assessments based on your age, risk factors, and medical history.
Z9079Medical history code indicating surgical removal of genital organs not specified elsewhere
This is a medical history code used to document that a person has had one or more genital organs surgically removed in the past, where the specific organ(s) don't fit into other more specific ICD-10 categories. This code is used for medical record-keeping and billing purposes to indicate this aspect of a patient's surgical history. It does not represent a current medical condition requiring treatment, but rather documents a previous surgical procedure that may be relevant to current or future medical care.
K589Irritable bowel syndrome (IBS) without diarrhea - a digestive condition causing abdominal pain and changes in bowel habits
Irritable bowel syndrome (IBS) without diarrhea is a common digestive disorder that affects the large intestine (colon). This condition causes recurring abdominal pain, cramping, bloating, and changes in bowel movements - but specifically without diarrhea as a main symptom. Instead, patients may experience constipation, normal bowel movements, or alternating patterns. The exact cause isn't fully understood, but it's thought to involve problems with how the gut and brain communicate, changes in gut bacteria, or increased sensitivity in the intestines. While IBS can be uncomfortable and disruptive to daily life, it doesn't cause permanent damage to the intestines or increase the risk of serious diseases like cancer. This diagnosis being used for inpatient services suggests the symptoms may have been severe enough to require hospital evaluation or treatment.
Z113Screening test for sexually transmitted infections (STIs)
This code represents a medical visit or encounter where you received screening tests to check for infections that are transmitted through sexual contact, such as chlamydia, gonorrhea, syphilis, HIV, or other sexually transmitted infections. This is preventive care to detect infections early, even when you don't have symptoms. The screening may involve blood tests, urine tests, or swab samples depending on which infections are being tested for.
R509Fever of unknown cause - when you have an elevated body temperature but the specific reason hasn't been identified yet
This code is used when you have a fever (elevated body temperature above normal) but your healthcare provider hasn't yet determined what's causing it. Fever is your body's natural response to infection or illness, but many different conditions can cause fever. During your office visit, your doctor will work to identify the underlying cause through examination, questions about your symptoms, and possibly additional tests. The fever itself is a symptom rather than a specific disease, so finding and treating the root cause is important for your recovery.
T361X5AAdverse reaction to cephalosporin or beta-lactam antibiotics (first occurrence)
This code indicates that you experienced an unwanted side effect or adverse reaction to a specific type of antibiotic medication called cephalosporins or other beta-lactam antibiotics. These are common antibiotics used to treat bacterial infections. The reaction could include symptoms like allergic reactions, digestive problems, or other side effects. The 'initial encounter' designation means this is the first time this particular adverse reaction is being documented and treated during your hospital stay.
Z202Contact with or exposure to sexually transmitted infections
This code indicates that you have been exposed to or had contact with someone who has a sexually transmitted infection (STI). This doesn't mean you have the infection yourself - it's used when there's a reason to test or monitor you because of potential exposure. This might occur after unprotected sexual contact with someone who has an STI, or when a sexual partner has been diagnosed with an infection. Healthcare providers use this code when ordering tests or providing preventive care related to possible STI exposure.
D252A non-cancerous fibroid tumor located on the outer surface of the uterus
A subserosal leiomyoma is a type of uterine fibroid - a benign (non-cancerous) tumor made of muscle and fibrous tissue. 'Subserosal' means it grows on the outer surface of the uterus, underneath the thin membrane that covers the uterus. These fibroids can grow outward from the uterine wall and may become quite large. While they are not cancerous, they can cause symptoms like pelvic pressure, bloating, or changes in menstrual periods depending on their size and location. The diagnosis is typically made through imaging studies like ultrasound, which appears to be the case here given the procedure classification.
Z6826Documentation of Body Mass Index (BMI) between 26.0-26.9, indicating you are slightly overweight
This code is used by healthcare providers to document your Body Mass Index (BMI) when it falls between 26.0 and 26.9. BMI is a measurement that uses your height and weight to estimate body fat. A BMI in this range means you are classified as slightly overweight according to standard medical guidelines. This is not a diagnosis of a disease, but rather a documentation code that helps your healthcare provider track your health metrics over time. Your doctor may discuss lifestyle modifications, nutrition, or exercise recommendations based on this measurement along with other health factors.
Z9189Other personal risk factors for health problems not specifically listed elsewhere
This code is used to document personal risk factors that may affect your health but don't fit into other specific categories. Risk factors are characteristics or behaviors that may increase your chance of developing certain health conditions. These could include things like family history of certain diseases, lifestyle factors, environmental exposures, or other personal circumstances that your healthcare provider considers important for your medical care. This code helps ensure that all relevant risk factors are documented in your medical record, even if they don't have their own specific code. The associated lab test suggests your doctor may be monitoring or screening for conditions related to these risk factors.
N926Irregular menstrual periods with no specific cause identified
This code indicates that you are experiencing irregular menstrual cycles, meaning your periods may come at unpredictable times, be heavier or lighter than usual, or last for different lengths of time than normal. The 'unspecified' part means that your healthcare provider has documented the irregular bleeding pattern but hasn't identified a specific underlying cause yet. This is often used when initial evaluation is ongoing or when the irregularity doesn't fit into a more specific diagnostic category. Irregular menstruation can have many causes including hormonal changes, stress, weight changes, certain medications, or underlying medical conditions.
K591Ongoing diarrhea without an identifiable medical cause
Functional diarrhea is a condition where you experience frequent loose or watery bowel movements (at least 3 times per day) for an extended period, but medical tests cannot find a specific disease or infection causing it. Unlike other digestive conditions, there's no inflammation, infection, or structural problem in your intestines. The diarrhea occurs due to how your digestive system functions rather than from a specific illness. This condition can be chronic (long-lasting) and may be related to factors like stress, diet, or how your intestines process food and fluids. It's diagnosed when other causes have been ruled out through appropriate testing.
D61811A serious blood condition where medication has caused dangerously low levels of all blood cell types
Pancytopenia is a condition where your body has dangerously low counts of all three main types of blood cells: red blood cells (which carry oxygen), white blood cells (which fight infection), and platelets (which help blood clot). In this case, the condition was caused by a medication or drug you were taking. This is a serious condition that requires immediate medical attention and hospitalization because it leaves you vulnerable to severe anemia, infections, and bleeding problems. Your doctors will need to identify and stop the medication causing the problem while providing supportive care to manage the low blood counts.
N898Other specific vaginal conditions that are not caused by infection or inflammation
This code refers to various vaginal conditions that don't fit into other specific categories and are not caused by infection or inflammation. These might include structural abnormalities, hormonal-related changes, or other non-infectious conditions affecting the vagina. The exact condition would be documented in your medical records. Since this is paired with lab tests, your doctor likely ordered specific tests to help diagnose or monitor your particular vaginal condition.
N400Enlarged prostate without urinary symptoms
Benign prostatic hyperplasia (BPH) is a non-cancerous enlargement of the prostate gland that commonly occurs as men age. In this case, the prostate is enlarged but you are not experiencing lower urinary tract symptoms like difficulty urinating, frequent urination, or weak urine stream. The prostate gland surrounds the urethra (the tube that carries urine from the bladder), and while it's enlarged, it's not currently causing noticeable urinary problems. This condition is very common in men over 50 and is not related to prostate cancer.
D1800A benign (non-cancerous) growth made of blood vessels at an unspecified location
A hemangioma is a common, non-cancerous tumor made up of blood vessels that can appear anywhere on or in the body. These growths are typically red or purple in color and can range from very small to quite large. Most hemangiomas are present at birth or appear shortly after, though they can develop at any age. They are generally harmless but may require monitoring or treatment depending on their size, location, and whether they cause symptoms or cosmetic concerns. The 'unspecified site' designation means the exact location of the hemangioma was not documented in detail.
B600Babesiosis - a tick-borne infection that affects red blood cells
Babesiosis is an infection caused by tiny parasites called Babesia that are transmitted through tick bites, primarily from deer ticks (the same ticks that carry Lyme disease). These parasites invade and destroy red blood cells, which can cause symptoms similar to malaria including fever, chills, fatigue, body aches, and sometimes anemia. The infection is most commonly found in the northeastern and upper midwestern United States. Most people with healthy immune systems recover completely with proper treatment, but the infection can be more serious in people with weakened immune systems, the elderly, or those without a spleen. This diagnostic code indicates that babesiosis has been identified through laboratory testing or clinical examination.
R931Abnormal findings on heart imaging tests
This code indicates that imaging tests of your heart and coronary circulation (the blood vessels that supply your heart) showed results that are outside the normal range. These imaging tests could include chest X-rays, CT scans, MRI scans, or other diagnostic imaging procedures. The abnormal findings don't specify what exactly was found - it could be changes in heart size, shape, blood vessel appearance, or other structural differences. This code is used when the imaging shows something unusual that needs further evaluation or monitoring, but it doesn't indicate a specific diagnosis or disease.
T80211DFollow-up care for a bloodstream infection caused by a central line catheter
This code represents a subsequent encounter (follow-up visit) for a bloodstream infection that was caused by a central venous catheter (also called a central line). A central venous catheter is a tube placed into a large vein, usually in the chest, neck, or groin, to give medications or fluids directly into the bloodstream. Sometimes bacteria can enter the bloodstream through this catheter, causing a serious infection. The 'D' at the end indicates this is for ongoing care or monitoring after the initial diagnosis and treatment of this infection.
D693A blood disorder where the immune system destroys platelets, causing easy bruising and bleeding
Immune Thrombocytopenic Purpura (ITP) is a condition where your immune system mistakenly attacks and destroys platelets - the tiny blood cells that help your blood clot. When you don't have enough platelets, you may bruise easily, have small red or purple spots on your skin (called petechiae), experience nosebleeds, or have bleeding gums. The 'purpura' in the name refers to the purple-colored bruises or spots that often appear on the skin. This condition can be acute (short-term) or chronic (long-lasting). While it sounds serious, many people with ITP live normal lives with proper medical management. Treatment may include medications to boost platelet counts, suppress the immune system, or in some cases, removal of the spleen.
K5900Difficulty having bowel movements or infrequent bowel movements
This code indicates that you are experiencing constipation, which means you are having difficulty passing stools or having bowel movements less frequently than normal. Constipation can involve hard, dry stools that are difficult to pass, straining during bowel movements, or having fewer than three bowel movements per week. The 'unspecified' part means that the specific cause or type of constipation hasn't been identified or documented. This is a common digestive issue that can be caused by various factors including diet, lack of physical activity, medications, or underlying medical conditions.
F4322A mental health condition where someone has difficulty coping with a stressful life event, causing significant anxiety symptoms
Adjustment Disorder with Anxiety is a mental health diagnosis given when someone develops excessive anxiety symptoms in response to a specific stressful life event or change. This could include things like job loss, divorce, moving, illness, or other major life transitions. The anxiety symptoms are more severe than what would normally be expected for that situation and significantly interfere with daily functioning. Unlike generalized anxiety disorder, this condition is directly linked to an identifiable stressor and typically improves as the person adapts to the change or the stressor is removed. Symptoms may include excessive worry, nervousness, restlessness, difficulty concentrating, or physical symptoms like rapid heartbeat or sweating.
Z6825Body Mass Index (BMI) between 25.0-25.9, indicating you are slightly overweight
This code indicates that your Body Mass Index (BMI) falls between 25.0 and 25.9, which is classified as overweight according to standard medical guidelines. BMI is calculated using your height and weight to assess whether you're at a healthy weight. A BMI in this range means you weigh more than what's considered ideal for your height, but you're not yet in the obese category (which starts at BMI 30). This code is often used in home health services to document your current weight status as part of your overall health assessment and care planning. Your healthcare team may use this information to provide guidance on nutrition, exercise, or other health management strategies.
K760Fatty liver disease - a condition where excess fat builds up in the liver
Fatty liver disease, also called hepatic steatosis, occurs when too much fat accumulates in liver cells. This can happen for various reasons including obesity, diabetes, high cholesterol, or certain medications. While often symptomless in early stages, it can sometimes cause fatigue or mild abdominal discomfort. The condition is often discovered during routine blood tests or imaging studies like ultrasounds. In many cases, fatty liver can be improved through lifestyle changes such as weight loss, healthy diet, and regular exercise. Your doctor will monitor the condition and may recommend additional tests to determine the underlying cause and appropriate treatment plan.
Z8551Medical history code indicating you previously had bladder cancer that has been treated
This code (Z8551) is used in your medical records to document that you have a personal history of bladder cancer (malignant neoplasm). This is not a diagnosis of current cancer, but rather a way for healthcare providers to keep track of your medical history. Having this code in your record helps doctors understand your health background and may influence decisions about screening, follow-up care, and treatment for other conditions. It's important for all your healthcare providers to know about your cancer history, as it may affect your risk for certain health issues and guide preventive care recommendations.
Z630Relationship problems with spouse or partner requiring professional counseling or therapy
This code indicates that you are receiving professional mental health services to address difficulties or conflicts in your relationship with your spouse or partner. This might include communication problems, trust issues, intimacy concerns, or other relationship challenges that are affecting your well-being. The code is used when these relationship issues are the primary focus of your psychiatric or counseling treatment. This is a common reason people seek therapy, and addressing relationship problems early can help improve both your mental health and relationship satisfaction.
B373Yeast infection of the vulva and vagina
This code indicates a fungal infection caused by Candida (commonly called a yeast infection) that affects the vulva (external genital area) and vagina. This is a very common condition that occurs when there's an overgrowth of naturally occurring yeast in the vaginal area. Symptoms typically include itching, burning, irritation, and often a thick, white discharge. This condition is not considered a sexually transmitted infection, though it can sometimes occur after sexual activity. It's usually easily treatable with antifungal medications.
N3000Acute bladder infection without blood in urine
This code indicates you have acute cystitis, which is a sudden inflammation or infection of your bladder. The 'acute' means it came on quickly rather than being a long-term condition. The 'without hematuria' part means there is no visible blood in your urine. Common symptoms include frequent urination, burning sensation when urinating, urgency to urinate, and pelvic discomfort. This is typically caused by bacterial infection and is more common in women than men. It's usually treated with antibiotics and responds well to treatment.
Z98890Follow-up care after a medical procedure or surgery
This code indicates that you are receiving medical care or monitoring after having a procedure or surgery. It's used when your current visit or treatment is related to your recovery or ongoing care following a previous medical intervention. This is a general code used when the specific type of post-procedure care doesn't fit into other more specific categories. It helps healthcare providers track that your current care is connected to a previous procedure you've had.
A770Rocky Mountain spotted fever - a serious tick-borne bacterial infection
This code indicates a diagnosis of Rocky Mountain spotted fever, which is caused by bacteria called Rickettsia rickettsii. This infection is transmitted through the bite of infected ticks, particularly the American dog tick and Rocky Mountain wood tick. Despite its name, this disease occurs throughout the United States, not just in the Rocky Mountain region. Symptoms typically include sudden onset of fever, headache, muscle aches, and a characteristic spotted rash that usually appears 2-5 days after fever begins. The rash often starts on wrists and ankles, then spreads to the rest of the body. This is a serious condition that requires prompt antibiotic treatment, as it can be life-threatening if left untreated. Early diagnosis and treatment with antibiotics like doxycycline are crucial for recovery.
D649A blood condition where you don't have enough healthy red blood cells or hemoglobin
Anemia is a condition where your blood doesn't have enough healthy red blood cells or hemoglobin to carry adequate oxygen to your body's tissues. This can make you feel tired, weak, or short of breath. The 'unspecified' designation means your doctor has diagnosed anemia but hasn't yet determined the specific type or cause. There are many different types of anemia with various causes, including iron deficiency, vitamin deficiencies, chronic diseases, or genetic conditions. Your healthcare provider will likely order additional tests to determine the specific type and underlying cause of your anemia so they can recommend the most appropriate treatment.
D824Hyperimmunoglobulin E (IgE) syndrome - a rare genetic immune system disorder causing very high IgE antibody levels
Hyperimmunoglobulin E (IgE) syndrome, also known as Job syndrome, is a rare inherited immune system disorder. People with this condition have extremely high levels of IgE antibodies in their blood - much higher than normal. IgE antibodies are part of your immune system that typically help fight parasites and are involved in allergic reactions. This syndrome causes recurring skin infections, lung infections, and distinctive facial features. Patients often experience severe eczema-like skin rashes, frequent bacterial infections (especially staph infections), and may have problems with their bones, teeth, and connective tissues. The condition is present from birth but symptoms may not appear until childhood or later. It requires ongoing medical management to prevent and treat infections.
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.
H10533Inflammation of eyelids and eye surface caused by contact with irritants, affecting both eyes
Contact blepharoconjunctivitis is a condition where both the eyelids (blepharitis) and the clear membrane covering the eye (conjunctivitis) become inflamed due to direct contact with an irritating substance. This bilateral condition affects both eyes and typically occurs when allergens, chemicals, cosmetics, or other irritants come into contact with the eye area. Symptoms commonly include redness, swelling, itching, burning, tearing, and discharge from both eyes.
K623A condition where part of the rectum slides out through the anus
Rectal prolapse is a medical condition where the rectum (the last part of the large intestine) slides out of its normal position and protrudes through the anus (the opening where bowel movements exit the body). This can happen when the muscles and ligaments that normally hold the rectum in place become weakened or stretched. The prolapse may occur only during bowel movements and go back in on its own, or it may stay outside and require manual repositioning. Symptoms can include a visible bulge from the anus, difficulty controlling bowel movements, mucus discharge, and discomfort or pain. This condition can affect people of any age but is more common in older adults, particularly women, and in young children.
I4510A heart rhythm condition where electrical signals are delayed in the right side of the heart
Right bundle-branch block is a condition where the electrical signals that control your heartbeat are delayed or blocked as they travel through the right side of your heart. The 'bundle branches' are like electrical wires that carry signals to make your heart beat properly. When there's a block in the right bundle branch, the right side of your heart contracts slightly later than the left side. This is often harmless and many people have no symptoms, though it can sometimes indicate underlying heart conditions. The 'unspecified' designation means the exact type or cause of the block wasn't determined during this visit.
G4733Office visit for obstructive sleep apnea - a condition where breathing repeatedly stops and starts during sleep
This code represents an office visit with your doctor to discuss or manage obstructive sleep apnea (OSA). OSA is a sleep disorder where your throat muscles relax too much during sleep, causing your airway to narrow or close completely. This leads to pauses in breathing that can happen many times throughout the night. These breathing interruptions cause your oxygen levels to drop and frequently wake you up, even if you don't remember waking. Common symptoms include loud snoring, gasping during sleep, morning headaches, daytime fatigue, and difficulty concentrating. This condition affects both adults and children and can lead to serious health problems if left untreated, including high blood pressure, heart disease, and diabetes.
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