ICD-10 code for vertical talus

The ICD-10-CM code for vertical talus is Q66.80 (Congenital vertical talus deformity, unspecified foot). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Q66.80.

Within Q66.8, choose Q66.80 (Congenital vertical talus deformity, unspecified foot) only when documentation doesn't support a more specific option: congenital vertical talus deformity, right foot (Q66.81), congenital vertical talus deformity, left foot (Q66.82) and other specified congenital deformities of feet (Q66.89).

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), DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378) and DRG 795 (Normal Newborn, relative weight 0.2022), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.