ICD10Check
CheckerBrowseOpen

O21

⚠ Non-billable (Header)

Excessive vomiting in pregnancy

Pregnancy, childbirth and the puerperium (O00-O9A)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code
✅ No additional coding notes for O21

Child Codes (5)

O21.0Mild hyperemesis gravidarumO21.1Hyperemesis gravidarum with metabolic disturbanceO21.2Late vomiting of pregnancyO21.8Other vomiting complicating pregnancyO21.9Vomiting of pregnancy, unspecified

🧪 Validate Combinations

Add O21 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeO21
BillableNo — Header code
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes20 note(s)
Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)