O91.0

ICD-10Non-billable category

Infct of nipple assoc w pregnancy, the puerp and lactation

Official ICD-10-CM descriptor (FY2026)

Infection of nipple associated with pregnancy, the puerperium and lactation

O91.0 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

ICD-10-CM FY2026 defines 3 codes beneath O91.0. See the ICD-10-CM index for what this site publishes.

Related codes in O91

Where this code sits

Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: Complications predominantly related to the puerperium (O85-O92)
Parent code: O91

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.