ICD-10-CM 2027
ICD-10 code for congenital dwarfism
From the official ICD-10-CM alphabetic index entry “Dwarfism › congenital”. Page updated September 29, 2026.
About coding congenital dwarfism
The ICD-10-CM code for congenital dwarfism is E34.328 (Other genetic causes of short stature).
Within E34.32, choose E34.328 (Other genetic causes of short stature) only when documentation doesn't support a more specific option: primary insulin-like growth factor-1 (IGF-1) deficiency (E34.321), insulin-like growth factor-1 (IGF-1) resistance (E34.322) and unspecified genetic causes of short stature (E34.329).
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 congenital dwarfism ICD-10 codes
What is the ICD-10 code for congenital dwarfism?
- E34.328 — Other genetic causes of short stature.
Is E34.328 billable?
- Yes. E34.328 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E34.328 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E34.328 as a principal diagnosis.
Is E34.328 a CC or MCC?
- No. E34.328 is neither a CC nor an MCC under MS-DRG v44.0.