ICD-10-CM 2027
ICD-10 code for Thelitis puerperal
Infection of nipple associated with the puerperium
From the official ICD-10-CM alphabetic index entry “Puerperal, puerperium (complicated by, complications) › thelitis”. Page updated September 29, 2026.
About coding Thelitis puerperal
The ICD-10-CM code for Thelitis puerperal is O91.02 (Infection of nipple associated with the puerperium). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on O91.02.
Within O91.0 (infection of nipple associated with pregnancy, the puerperium and lactation), O91.02 is specifically for infection of nipple associated with the puerperium. Related codes cover pregnancy (O91.01) and lactation (O91.03).
Use an additional code to identify infection.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Thelitis puerperal codes (official index)
- associated with lactation O91.03 — Infection of nipple associated with lactation
Common questions about Thelitis puerperal ICD-10 codes
What is the ICD-10 code for Thelitis puerperal?
- O91.02 — Infection of nipple associated with the puerperium. More specific codes apply when the documentation supports them: O91.03.
What is the ICD-10 code for associated with lactation thelitis puerperal?
- O91.03 — Infection of nipple associated with lactation.
Is O91.02 billable?
- Yes. O91.02 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O91.02 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O91.02 as a principal diagnosis.
Is O91.02 a CC or MCC?
- No. O91.02 is neither a CC nor an MCC under MS-DRG v44.0.