ICD-10-CM 2027
ICD-10 code for constitutional dwarfism
From the official ICD-10-CM alphabetic index entry “Dwarfism › constitutional”. Page updated September 29, 2026.
About coding constitutional dwarfism
The ICD-10-CM code for constitutional dwarfism is E34.31 (Constitutional short stature).
Within E34.3 (short stature due to endocrine disorder), E34.31 is specifically for constitutional short stature. Related codes cover unspecified (E34.30), genetic causes of short stature (E34.32) and other short stature due to endocrine disorder (E34.39).
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 constitutional dwarfism ICD-10 codes
What is the ICD-10 code for constitutional dwarfism?
- E34.31 — Constitutional short stature.
Is E34.31 billable?
- Yes. E34.31 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E34.31 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E34.31 as a principal diagnosis.
Is E34.31 a CC or MCC?
- No. E34.31 is neither a CC nor an MCC under MS-DRG v44.0.