Previous Cesarean Delivery with Uterine Window/Hysterotomy Dehiscence

Please clarify which code should be assigned when a previous cesarean section hysterotomy wound affects the current admission (the patient is admitted at term for a repeat cesarean section). The provider will often document “uterine window,” “thin uterine segment,” or hysterotomy dehiscence.” The uterine abnormality relates to the previous cesarean section, not the current operation. How should this be coded? ...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article explains how to approach documentation of prior cesarean-related uterine findings when they are mentioned on a current admission for repeat cesarean delivery. It is aimed at coders, billers, and clinical documentation staff who work with obstetric inpatient coding and need to distinguish current operative information from a condition related to the earlier delivery. The guidance focuses on diagnosis selection and the broader context of obstetric late effects and prior cesarean delivery coding.

Why This Topic Matters

Accurate coding of prior obstetric complications can affect record specificity and the representation of pregnancy-related history on the current admission. This topic is relevant when providers use nontechnical terms for uterine findings associated with a previous cesarean delivery.

What You Will Learn

  • How the article frames coding of a prior cesarean-related uterine finding during a later admission.
  • Which broad diagnosis categories are discussed for a term repeat cesarean admission with a prior operative complication in the history.
  • How the article distinguishes the earlier cesarean-related issue from the current procedure at a high level.
  • The general documentation context in which obstetric late-effect coding is considered.

Who Should Read This

  • Medical coders
  • Coding auditors
  • Obstetric billing staff
  • Clinical documentation specialists
  • Revenue cycle professionals

Codes Discussed

  • ICD-9-CM: 654.21
  • ICD-9-CM: 677

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