O91.21
Nonpurulent mastitis associated with pregnancy
Non-billableCategory
Coding Guidelines
Inclusion Terms
- Gestational interstitial mastitis
- Gestational lymphangitis of breast
- Gestational mastitis NOS
- Gestational parenchymatous mastitis
Specific Codes (4)
O91.211Billable
Nonpurulent mastitis associated with pregnancy, first trimester
O91.212Billable
Nonpurulent mastitis associated with pregnancy, second trimester
O91.213Billable
Nonpurulent mastitis associated with pregnancy, third trimester
O91.219Billable
Nonpurulent mastitis associated with pregnancy, unspecified trimester


