Subinvolution of uterus

This code represents a condition where the uterus fails to return to its normal size and state after childbirth, but is not specifically related to the immediate postpartum period. It indicates a delayed or incomplete involution process, often presenting with persistent uterine enlargement or abnormal bleeding.

This code is appropriate for non-puerperal cases of uterine subinvolution, such as those identified during routine gynecological exams or investigations for abnormal uterine bleeding occurring months or years after delivery. Documentation should clearly state "subinvolution of uterus" and specify that it is not a postpartum complication.

• Ensure documentation explicitly states "subinvolution of uterus" and not "puerperal subinvolution."
• Review the patient's history to confirm the subinvolution is not occurring within the immediate postpartum period (typically within 6 weeks of delivery).
• Do not code with O90.89 (Puerperal subinvolution of uterus) due to the Excludes1 note.