ICD-10-CM 2027
ICD-10 code for obstetric mastitis
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Mastitis (acute) (diffuse) (nonpuerperal) (subacute) › obstetric (interstitial) (nonpurulent)”. Page updated September 29, 2026.
About coding obstetric mastitis
The official ICD-10-CM index doesn't give a single default code for obstetric mastitis; the code depends on the details below.
More specific obstetric mastitis codes (official index)
- associated with
- lactation O91.23 — Nonpurulent mastitis associated with lactation
- pregnancy O91.21 — Nonpurulent mastitis associated with pregnancy
- puerperium O91.22 — Nonpurulent mastitis associated with the puerperium
- purulent
- associated with
- lactation O91.13 — Abscess of breast associated with lactation
- pregnancy O91.11 — Abscess of breast associated with pregnancy
- puerperium O91.12 — Abscess of breast associated with the puerperium