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ICD-9-CM diagnosis code (retired)

642.94 — Unspecified hypertension complicating pregnancy, childbirth, or the puerperium, postpartum condition or complication

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 642.94

642.94 is an ICD-9-CM diagnosis code for unspecified hypertension complicating pregnancy, childbirth, or the puerperium, postpartum condition or complication. 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 4 ICD-10-CM codes, such as O16.1 (Unspecified maternal hypertension, first trimester), O16.2 (Unspecified maternal hypertension, second trimester) and O16.3 (Unspecified maternal hypertension, third trimester). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 642.94

What is the ICD-10 code for ICD-9 642.94?

The GEMs map 642.94 to ICD-10-CM O16.1, O16.2, O16.3 and O16.5.

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.