ICD-10 code for integument malformation

The ICD-10-CM code for integument malformation is Q84.9 (Congenital malformation of integument, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q84.9.

Within Q84, choose Q84.9 (Congenital malformation of integument, unspecified) only when documentation doesn't support a more specific option: congenital alopecia (Q84.0), congenital morphological disturbances of hair, not elsewhere classified (Q84.1), other congenital malformations of hair (Q84.2), Anonychia (Q84.3), congenital leukonychia (Q84.4), enlarged and hypertrophic nails (Q84.5), other congenital malformations of nails (Q84.6) and other specified congenital malformations of integument (Q84.8).

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 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.