ICD-9-CM diagnosis code (retired)
V91.21 — Quadruplet gestation, with two or more monochorionic fetuses
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 V91.21
V91.21 is an ICD-9-CM diagnosis code for Quadruplet gestation, with two or more monochorionic fetuses. 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, O30.219 (Quadruplet pregnancy with two or more monochorionic fetuses, unspecified trimester). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- O30.219Quadruplet pregnancy with two or more monochorionic fetuses, unspecified trimesterapproximate
Common questions about V91.21
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.