ICD-10 code for anus disease

The ICD-10-CM code for anus disease is K62.9 (Disease of anus and rectum, 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 K62.9.

Within K62, choose K62.9 (Disease of anus and rectum, unspecified) only when documentation doesn't support a more specific option: anal polyp (K62.0), rectal polyp (K62.1), anal prolapse (K62.2), rectal prolapse (K62.3), stenosis of anus and rectum (K62.4), hemorrhage of anus and rectum (K62.5), ulcer of anus and rectum (K62.6), radiation proctitis (K62.7) and 1 more.

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 393 (Other Digestive System Diagnoses with MCC, relative weight 1.5881), DRG 394 (Other Digestive System Diagnoses with CC, relative weight 0.9228) and DRG 395 (Other Digestive System Diagnoses without CC/MCC, relative weight 0.6382), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.