ICD-9-CM diagnosis code (retired)
642.51 — Severe pre-eclampsia, 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 642.51
642.51 is an ICD-9-CM diagnosis code for severe pre-eclampsia, 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 6 ICD-10-CM codes, such as O14.12 (Severe pre-eclampsia, second trimester), O14.13 (Severe pre-eclampsia, third trimester) and O14.14 (Severe pre-eclampsia complicating childbirth). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- O14.12Severe pre-eclampsia, second trimesterapproximate
- O14.13Severe pre-eclampsia, third trimesterapproximate
- O14.14Severe pre-eclampsia complicating childbirthapproximate
- O14.22HELLP syndrome (HELLP), second trimesterapproximate
- O14.23HELLP syndrome (HELLP), third trimesterapproximate
- O14.24HELLP syndrome, complicating childbirthapproximate
Common questions about 642.51
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.