ICD-10-CM 2027
ICD-10 code for Reifenstein syndrome
From the official ICD-10-CM alphabetic index entry “Reifenstein syndrome”. Page updated September 29, 2026.
About coding Reifenstein syndrome
The ICD-10-CM code for Reifenstein syndrome is E34.52 (Partial androgen insensitivity syndrome).
Within E34.5 (androgen insensitivity syndrome), E34.52 is specifically for partial androgen insensitivity syndrome. Related codes cover unspecified (E34.50) and complete androgen insensitivity syndrome (E34.51).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 643 (Endocrine Disorders with MCC, relative weight 1.6139), DRG 644 (Endocrine Disorders with CC, relative weight 1.0044) and DRG 645 (Endocrine Disorders without CC/MCC, relative weight 0.7459), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Reifenstein syndrome ICD-10 codes
What is the ICD-10 code for Reifenstein syndrome?
- E34.52 — Partial androgen insensitivity syndrome.
Is E34.52 billable?
- Yes. E34.52 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E34.52 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E34.52 as a principal diagnosis.
Is E34.52 a CC or MCC?
- No. E34.52 is neither a CC nor an MCC under MS-DRG v44.0.