ICD-9-CM diagnosis code (retired)
643.90 — Unspecified vomiting of pregnancy, unspecified as to episode of care or not applicable
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 643.90
643.90 is an ICD-9-CM diagnosis code for unspecified vomiting of pregnancy, unspecified as to episode of care or not applicable. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, O21.9 (Vomiting of pregnancy, unspecified). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- O21.9Vomiting of pregnancy, unspecifiedapproximate
Common questions about 643.90
What is the ICD-10 code for ICD-9 643.90?
- The GEMs map 643.90 to ICD-10-CM O21.9.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.