Nonpurulent mastitis associated w pregnancy, first trimester

This code signifies inflammation of the breast tissue, specifically nonpurulent (without pus formation), occurring during the first trimester of pregnancy. It indicates a localized inflammatory process in the breast that is not infectious or abscess-forming.

Assign this code when a pregnant patient in her first trimester presents with breast pain, tenderness, swelling, or redness, and clinical examination confirms mastitis without evidence of infection or abscess. Documentation should clearly state "nonpurulent mastitis" and the gestational trimester.

• Ensure documentation specifies "nonpurulent" to differentiate from infectious mastitis.
• Verify the gestational trimester is explicitly stated as "first trimester."
• Do not use for mastitis occurring postpartum or unrelated to pregnancy.