ICD-10 code for external hemorrhoids

The ICD-10-CM code for external hemorrhoids is K64.4 (Residual hemorrhoidal skin tags). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K64.4.

Within K64 (hemorrhoids and perianal venous thrombosis), K64.4 is specifically for residual hemorrhoidal skin tags. Related codes cover first degree hemorrhoids (K64.0), second degree hemorrhoids (K64.1), third degree hemorrhoids (K64.2), fourth degree hemorrhoids (K64.3), perianal venous thrombosis (K64.5), other hemorrhoids (K64.8) and unspecified hemorrhoids (K64.9).

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.