Chronic subinvolution of uterus

This code describes a persistent failure of the uterus to return to its normal size and tone after childbirth, extending beyond the typical six-week postpartum period. It indicates a prolonged and incomplete uterine involution, which can lead to ongoing symptoms such as abnormal bleeding or pelvic discomfort.

Use this code when documentation clearly indicates a diagnosis of chronic subinvolution of the uterus, typically identified after the puerperium. This diagnosis is often supported by physical examination findings, patient history of persistent uterine enlargement, and/or prolonged lochia.

• Differentiate from acute subinvolution (which would be coded within the postpartum period) by the chronicity of the condition.
• Ensure documentation specifies "chronic" or indicates the condition persists beyond the normal postpartum recovery timeframe.
• Consider co-reporting with codes for associated symptoms like abnormal uterine bleeding (e.g., 626.x) if documented.