Anemia complicating the puerperium

This code signifies anemia that develops or persists during the postpartum period (puerperium) and is considered a complication of the pregnancy or delivery. It indicates that the anemia is not a new onset condition unrelated to the recent childbirth but rather an exacerbation or continuation of an anemic state influenced by the puerperal state.

Apply this code when documentation clearly links the patient's anemia to the puerperal period, and it is considered a complication rather than a pre-existing condition that simply continues. This typically applies to anemia diagnosed or significantly worsening within the 6-week postpartum period. Supporting documentation includes physician notes explicitly stating "anemia complicating puerperium" or similar phrasing, along with laboratory findings confirming anemia.

• Do not use this code for anemia that was not present or exacerbated by the puerperium.
• Distinguish carefully from O90.81, which is for new-onset postpartum anemia not pre-existing prior to delivery.
• Always sequence this code as a secondary diagnosis when another condition is the primary reason for the encounter.