ICD-10 code for joint anomaly

The ICD-10-CM code for joint anomaly is Q74.9 (Unspecified congenital malformation of limb(s)). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q74.9.

Within Q74, choose Q74.9 (Unspecified congenital malformation of limb(s)) only when documentation doesn't support a more specific option: other congenital malformations of upper limb(s), including shoulder girdle (Q74.0), congenital malformation of knee (Q74.1), other congenital malformations of lower limb(s), including pelvic girdle (Q74.2), Arthrogryposis multiplex congenita (Q74.3) and other specified congenital malformations of limb(s) (Q74.8).

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.