AHA Coding Clinic® for ICD-9 - 2000 Fourth Quarter; Volumes 1 & 2 NEW/REVISED DIAGNOSIS CODES
Late Pregnancy
Women who are between 40 and 42 weeks of pregnancy are past full term, but not yet considered to have a prolonged pregnancy. There was no ICD-9-CM code to classify these women. Category 645 has been retitled from "Prolonged Pregnancy" to "Late Pregnancy." New codes have been created under 645.5: 645.1, Post-term pregnancy, for women between 40 and 42 weeks of pregnancy, and 645.2, Prolonged pregnancy, for women who are past 42 weeks of pregnancy. ...
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Article Overview
This article covers a coding update for late pregnancy in ICD-9-CM, including a category retitle and the introduction of related pregnancy timing codes. It is intended for coding professionals and others who need to understand how this area was revised and how the update affects classification of pregnancy timing. The article presents the general scope of the change and the associated code set context without going into broader clinical management.
Why This Topic Matters
Accurate classification of pregnancy timing affects coding consistency and reporting. This update clarifies a previously unclassified interval and explains the structure of the revised ICD-9-CM category.
What You Will Learn
- How the late pregnancy category was revised in ICD-9-CM
- Which pregnancy timing concepts are addressed by the update
- How the article frames the coding change for late and post-term pregnancy
- The broader context for classifying pregnancy duration in coding
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation specialists
- Revenue cycle staff
- Health information management professionals
Codes Discussed
Code Ranges Discussed
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