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ICD-9-CM diagnosis code (retired)

671.91 — Unspecified venous complication of pregnancy and the puerperium, delivered, with or without mention of antepartum condition

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 671.91

671.91 is an ICD-9-CM diagnosis code for unspecified venous complication of pregnancy and the puerperium, delivered, with or without mention of antepartum condition. 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 3 ICD-10-CM codes, such as O22.91 (Venous complication in pregnancy, unspecified, first trimester), O22.92 (Venous complication in pregnancy, unspecified, second trimester) and O22.93 (Venous complication in pregnancy, unspecified, third trimester). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 671.91

What is the ICD-10 code for ICD-9 671.91?

The GEMs map 671.91 to ICD-10-CM O22.91, O22.92 and O22.93.

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.