What is ICD-10-CM?
ICD-10-CM is the diagnosis code set used in the United States on medical claims, superbills and health records. The CDC National Center for Health Statistics maintains it and publishes a new version every October 1.
ICD-10-CM FY2027
ICD-10-CM code lookup
Search all 2027 ICD-10-CM diagnosis codes by code or by words, check whether a code is billable, and add it to a superbill or a Good Faith Estimate in one click.
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A00-B99Certain infectious and parasitic diseasesC00-D49NeoplasmsD50-D89Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanismE00-E89Endocrine, nutritional and metabolic diseasesF01-F99Mental, behavioral and neurodevelopmental disordersG00-G99Diseases of the nervous systemH00-H59Diseases of the eye and adnexaH60-H95Diseases of the ear and mastoid processI00-I99Diseases of the circulatory systemJ00-J99Diseases of the respiratory systemK00-K95Diseases of the digestive systemL00-L99Diseases of the skin and subcutaneous tissueM00-M99Diseases of the musculoskeletal system and connective tissueN00-N99Diseases of the genitourinary systemO00-O9APregnancy, childbirth and the puerperiumP00-P96Certain conditions originating in the perinatal periodQ00-Q99Congenital malformations, deformations and chromosomal abnormalitiesR00-R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedS00-T88Injury, poisoning and certain other consequences of external causesU00-U85Codes for special purposesV00-Y99External causes of morbidityZ00-Z99Factors influencing health status and contact with health services
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ICD-10-CM questions
Which version is shown here?
The FY2027 code set, used for dates of service from October 1, 2026 to September 30, 2027. It has more than 74,000 billable codes.
What does billable mean?
A billable code is the most specific code available and can go on a claim. Header codes, like a three-character category with codes beneath it, group related codes and cannot be billed on their own.
How do I add a diagnosis code to a superbill?
Open any code page and choose Superbill Generator. The code is added for you, and you can search for more codes inside the tool.
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.