O03
ICD-10Non-billable categorySpontaneous abortion
Official ICD-10-CM descriptor (FY2026)
Spontaneous abortion
O03 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- miscarriage
Notes
- Incomplete abortion includes retained products of conception following spontaneous abortion
More specific codes under O03
- O03.0Genitl trct and pelvic infection fol incmpl spon abortion
- O03.1Delayed or excessive hemor following incmpl spon abortion
- O03.2Embolism following incomplete spontaneous abortion
- O03.3Oth and unsp comp following incomplete spontaneous abortioncategory
- O03.4Incomplete spontaneous abortion without complication
- O03.5Genitl trct and pelvic infct fol complete or unsp spon abort
- O03.6Delayed or excess hemor fol complete or unsp spon abortion
- O03.7Embolism following complete or unsp spontaneous abortion
- O03.8Oth and unsp comp following complete or unsp spon abortioncategory
- O03.9Complete or unsp spontaneous abortion without complication
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.