ICD-10-CM 2027
ICD-10 code for Sentinel tag
From the official ICD-10-CM alphabetic index entry “Tag (hypertrophied skin) (infected) › sentinel”. Page updated September 29, 2026.
About coding Sentinel tag
The ICD-10-CM code for Sentinel tag is K64.4 (Residual hemorrhoidal skin tags).
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.
Common questions about Sentinel tag ICD-10 codes
What is the ICD-10 code for Sentinel tag?
- K64.4 — Residual hemorrhoidal skin tags.
Is K64.4 billable?
- Yes. K64.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K64.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K64.4 as a principal diagnosis.
Is K64.4 a CC or MCC?
- No. K64.4 is neither a CC nor an MCC under MS-DRG v44.0.