ICD-10-CM 2027
ICD-10 code for limb complete agenesis
From the official ICD-10-CM alphabetic index entry “Agenesis › limb (complete)”. Page updated September 29, 2026.
About coding limb complete agenesis
The ICD-10-CM code for limb complete agenesis is Q73.0 (Congenital absence of unspecified limb(s)).
Within Q73, choose Q73.0 (Congenital absence of unspecified limb(s)) only when documentation doesn't support a more specific option: Phocomelia, unspecified limb(s) (Q73.1) and other reduction defects of unspecified limb(s) (Q73.8).
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 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific limb complete agenesis codes (official index)
- lower
- upper
Common questions about limb complete agenesis ICD-10 codes
What is the ICD-10 code for limb complete agenesis?
- Q73.0 — Congenital absence of unspecified limb(s).
Is Q73.0 billable?
- Yes. Q73.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q73.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q73.0 as a principal diagnosis.
Is Q73.0 a CC or MCC?
- No. Q73.0 is neither a CC nor an MCC under MS-DRG v44.0.