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ICD-9-CM diagnosis code (retired)

642.23 — Other pre-existing hypertension, complicating pregnancy, childbirth, and the puerperium, antepartum 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 642.23

642.23 is an ICD-9-CM diagnosis code for other pre-existing hypertension, complicating pregnancy, childbirth, and the puerperium, antepartum 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 12 ICD-10-CM codes, such as O10.111 (Pre-existing hypertensive heart disease complicating pregnancy, first trimester), O10.112 (Pre-existing hypertensive heart disease complicating pregnancy, second trimester) and O10.113 (Pre-existing hypertensive heart disease complicating pregnancy, third trimester). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 642.23

What is the ICD-10 code for ICD-9 642.23?

The GEMs map 642.23 to ICD-10-CM O10.111, O10.112, O10.113, O10.211, O10.212, O10.213 and 6 more.

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.