O91.21

The ICD-10-CM code for nonpurulent mastitis associated with pregnancy is O91.21. The full clinical description is "Nonpurulent mastitis associated with pregnancy". O91.21 is a non-billable header code. Use a more specific child code for billing purposes.

ICD-10-CM code O91.21 represents “Nonpurulent mastitis associated with pregnancy”. It is classified under Chapter 15: Pregnancy, Childbirth and the Puerperium and is a non-billable header code. Use a more specific child code for billing purposes.

No, O91.21 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under O91.21.

O91.21 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).

O91.21 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-).

O91.21 has 4 child codes, including: O91.211 (Nonpurulent mastitis associated w pregnancy, first trimester), O91.212 (Nonpurulent mastitis assoc w pregnancy, second trimester), O91.213 (Nonpurulent mastitis associated w pregnancy, third trimester), O91.219 (Nonpurulent mastitis associated w pregnancy, unsp trimester).

Yes, when using O91.21, also report: code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.; infection.

O91.21 is linked to 5 UMLS Concept Unique Identifiers: C2909508, C1411622, C2909509, C2909510, C2909514. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like nonpurulent mastitis associated with pregnancy affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

There is no direct ICD-11 mapping available for O91.21 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.