Asthma with Status Asthmaticus

Asthma is bronchial hypersensitivity characterized by a combination of mucosal edema, constriction of bronchial musculature, and excessive secretion of viscid edema (that may cause mucous plugs). Hyperactivity of the bronchial musculature due to various stimuli (exposure to allergens or responses to infection, irritating inhalants, cold air, exercise, or emotional upsets) causes widespread narrowing of the airways, which varies over time. Manifestations of asthma are wheezing, dyspnea out of proportion to exertion, and cough, and are usually reversible by use of drugs. Bronchospasm is a component of an acute asthmatic attack, which requires therapy for rapid reversal and prevention of...

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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 reviews the clinical background of asthma and status asthmaticus and places it in a coding context tied to ICD-9-CM category 493. It discusses how the condition has been described in medical literature, notes historical effective-date changes, and addresses related respiratory failure coding considerations. The content is relevant for coders, CDI professionals, and clinicians who document or review severe asthma cases.

Why This Topic Matters

Accurate understanding of this topic helps support consistent documentation review and diagnosis reporting for severe asthma presentations, especially when status asthmaticus and respiratory failure are both involved. The article also highlights historical classification changes that may affect legacy record interpretation.

What You Will Learn

  • How asthma and status asthmaticus are discussed in a coding-oriented clinical context
  • What historical category changes are mentioned for asthma-related diagnosis reporting
  • How related respiratory failure concepts are referenced alongside severe asthma
  • What broad terms are used in connection with status asthmaticus documentation

Who Should Read This

  • Medical coders
  • Clinical documentation improvement specialists
  • Health information management professionals
  • Clinicians documenting respiratory conditions

Codes Discussed

  • ICD-9-CM: 518.81
  • ICD-9-CM: 518.83
  • ICD-9-CM: 518.84
  • ICD-9-CM: 493.91

Code Ranges Discussed

  • ICD-9-CM: category 493

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