O91.213
BillableNonpurulent mastitis associated with pregnancy, third trimester
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Inflammation of breast tissue without pus formation that occurs during the third trimester of pregnancy.
Coding Tips
- •Third trimester begins at week 28 and continues through delivery; verify timing in documentation
- •If abscess develops instead of simple inflammation, use O91.113 instead
Code Hierarchy
└O91Infections of breast associated with pregnancy, the puerperium and lactation└O91.2Nonpurulent mastitis associated with pregnancy, the puerperium and lactation└O91.21Nonpurulent mastitis associated with pregnancy└O91.213Nonpurulent mastitis associated with pregnancy, third trimester
└O91.213Nonpurulent mastitis associated with pregnancy, third trimester