AHA Coding Clinic® for ICD-9 - 2005 Issue 4; VOLUMES 1 AND 2 NEW/REVISED CODES
Androgen Insensitivity Syndrome
Effective October 1, 2005, a new code has been created to uniquely identify androgen insensitivity syndrome (259.5). Androgen insensitivity syndrome (AIS), the current preferred term for the disorder previously designated testicular feminization, is a condition that affects sexual development before birth and during puberty. It is an X-linked recessive condition resulting in a failure of normal masculinization of the external genitalia in chromosomally male individuals. These individuals have an XY chromosome genotype. Androgen insensitivity syndrome generally occurs due to a genetic abnormality of the androgen receptor and can be either complete (CAIS) or partial (PAIS). It occurs when...
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Article Overview
This article reviews a coding update for androgen insensitivity syndrome, including the shift to a dedicated ICD-9-CM diagnosis code and related terminology cross-references. It is aimed at coding professionals, compliance staff, and clinicians who need to understand how the topic is represented in classification guidance. The discussion covers the condition itself at a high level, the distinction between complete and partial forms, and how associated terms were handled in the source coding update.
Why This Topic Matters
Accurate diagnosis coding depends on recognizing when a condition has its own classification entry and when older terminology has been redirected or removed. This update affects documentation review, code lookup, and historical coding interpretation.
Article Sections
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Clinical overview of androgen insensitivity syndrome
Introduces the condition and provides a broad medical overview of its role in sexual development and genetic basis. Also distinguishes between complete and partial forms at a general level.
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Coding update and terminology cross-references
Summarizes the coding change that added a dedicated diagnosis entry and notes how related legacy terms were cross-referenced in the classification. Includes the affected endocrine and testicular dysfunction categories at a high level.
What You Will Learn
- The general medical context of androgen insensitivity syndrome
- How the article frames complete and partial forms of the condition
- Which areas of the classification system were updated by the coding change
- How older terminology was redirected in the source update
Who Should Read This
- Medical coders
- Coding auditors
- Compliance professionals
- Clinicians documenting diagnoses
- Health information management staff
Codes Discussed
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