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ICD-9-CM diagnosis code (retired)

642.73 — Pre-eclampsia or eclampsia superimposed on pre-existing hypertension, 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 642.73

642.73 is an ICD-9-CM diagnosis code for pre-eclampsia or eclampsia superimposed on pre-existing hypertension, 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 3 ICD-10-CM codes, such as O11.1 (Pre-existing hypertension with pre-eclampsia, first trimester), O11.2 (Pre-existing hypertension with pre-eclampsia, second trimester) and O11.3 (Pre-existing hypertension with pre-eclampsia, third trimester). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 642.73

What is the ICD-10 code for ICD-9 642.73?

The GEMs map 642.73 to ICD-10-CM O11.1, O11.2 and O11.3.

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.