ICD-10 code for kidney anomaly

The ICD-10-CM code for kidney anomaly is Q63.9 (Congenital malformation of kidney, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Q63.9.

Within Q63, choose Q63.9 (Congenital malformation of kidney, unspecified) only when documentation doesn't support a more specific option: accessory kidney (Q63.0), Lobulated, fused and horseshoe kidney (Q63.1), ectopic kidney (Q63.2), hyperplastic and giant kidney (Q63.3) and other specified congenital malformations of kidney (Q63.8).

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 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.