ICD-9-CM diagnosis code (retired)
675.91 — Unspecified infection of the breast and nipple associated with childbirth, 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 675.91
675.91 is an ICD-9-CM diagnosis code for unspecified infection of the breast and nipple associated with childbirth, 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 one ICD-10-CM code, O91.23 (Nonpurulent mastitis associated with lactation). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- O91.23Nonpurulent mastitis associated with lactationapproximate
Common questions about 675.91
What is the ICD-10 code for ICD-9 675.91?
- The GEMs map 675.91 to ICD-10-CM O91.23.
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.