Free ICD-10-CM lookup
Every ICD-10-CM code. No ads, no paywall, no signup.
The complete ICD-10-CM code set: 74,879 billable codes across 22chapters, current to the FY2027 release. Search by code, clinical phrase, or the shorthand you actually type: mdd, dm2, afib all work. Every code page shows billable status, Excludes1 conflicts, seventh-character rules, and the full hierarchy.
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ICD-10-CMFY2027· effective October 1, 2026
The lookup tables
Find the row, then read across to the column that matches the circumstance.
Browse by chapter
The 22 chapters of the ICD-10-CM tabular list.
- 1Certain infectious and parasitic diseasesA00-B99
- 2NeoplasmsC00-D49
- 3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanismD50-D89
- 4Endocrine, nutritional and metabolic diseasesE00-E89
- 5Mental, Behavioral and Neurodevelopmental disordersF01-F99
- 6Diseases of the nervous systemG00-G99
- 7Diseases of the eye and adnexaH00-H59
- 8Diseases of the ear and mastoid processH60-H95
- 9Diseases of the circulatory systemI00-I99
- 10Diseases of the respiratory systemJ00-J99
- 11Diseases of the digestive systemK00-K95
- 12Diseases of the skin and subcutaneous tissueL00-L99
- 13Diseases of the musculoskeletal system and connective tissueM00-M99
- 14Diseases of the genitourinary systemN00-N99
- 15Pregnancy, childbirth and the puerperiumO00-O9A
- 16Certain conditions originating in the perinatal periodP00-P96
- 17Congenital malformations, deformations, chromosomal abnormalities, and genetic disordersQ00-QA1
- 18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R99
- 19Injury, poisoning and certain other consequences of external causesS00-T88
- 20External causes of morbidityV00-Y99
- 21Factors influencing health status and contact with health servicesZ00-Z99
- 22Codes for special purposesU00-U85
ICD-10-CMSource: CMS/NCHS public-domain release. Reference information for professional coders; not medical or billing advice.
Common lookups, disambiguated
The chart says one thing and ICD-10-CM has eleven codes for it. These pages sort out which one applies, and the mistake coders most often make on each.
- Abdominal painR10.9
- GERD (gastroesophageal reflux disease)K21.9
- Iron deficiency anemiaD50.9
- Major depressive disorder (MDD)F33.9
- Kidney transplantZ94.0
- Multiple sclerosisG35
- Hot flashesN95.1
- Type 2 diabetesE11.9
- HypertensionI10
- Atrial fibrillationI48.91
- Chronic kidney disease (CKD)N18.9
- COPDJ44.9
- Urinary tract infection (UTI)N39.0
- Low back painM54.50
- Chest painR07.9
- ObesityE66.9
- AnxietyF41.9
- SepsisA41.9
- PneumoniaJ18.9
- InfluenzaJ11.1
- COVID-19U07.1
- AnemiaD64.9
- UrolithiasisN20.9