Admitting Diagnosis

The inpatient admitting diagnosis may be expressed as one of the following: One or more significant findings (symptoms or signs) representing patient distress or abnormal findings on examination A "possible" diagnosis based on significant findings (working diagnosis) A diagnosis established on an ambulatory care basis or on previous hospital admission An injury or poisoning A reason or condition not classifiable as an illness or injury, such as pregnancy in labor, follow-up examination, and so forth Report only one admitting diagnosis. Code the admitting diagnosis as provided at time of admission as stated by the physician and code to the...

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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 covers general guidance for documenting inpatient admitting diagnoses and how they should be coded based on the physician’s admission statement and available specificity. It is intended for coding professionals who need to distinguish admitting diagnosis documentation from discharge principal diagnosis reporting and understand the role of episode-of-care and site-specific updates referenced in historical coding guidance.

Why This Topic Matters

Accurate admitting diagnosis reporting supports consistent inpatient record abstraction and helps avoid substituting the discharge principal diagnosis for the condition documented at admission. The article also points readers to historical coding updates that affected related diagnosis coding.

What You Will Learn

  • How inpatient admitting diagnoses are generally described at the time of admission
  • How admitting diagnosis documentation differs from the principal diagnosis at discharge
  • Why specificity at admission matters for coding and abstracting inpatient records
  • That historical coding updates referenced in the article affected related diagnosis code structure

Who Should Read This

  • Inpatient medical coders
  • Coding auditors
  • Health information management professionals
  • Clinical documentation specialists

Codes Discussed

  • ICD-9-CM: 185
  • ICD-9-CM: 410.9
  • ICD-9-CM: 441.0
  • ICD-9-CM: V22.1
  • ICD-9-CM: 650
  • ICD-9-CM: 578.9
  • ICD-9-CM: 532.00
  • ICD-9-CM: 611.72
  • ICD-9-CM: 174.9
  • ICD-9-CM: 575.0
  • ICD-9-CM: 574.00
  • ICD-9-CM: 428.0
  • ICD-9-CM: 410.1
  • ICD-9-CM: 413.9
  • ICD-9-CM: 552.3

Code Ranges Discussed

  • ICD-9-CM: 410.0-410.9

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