ICD-10-CM 2027 diagnosis code
K62.6Ulcer of anus and rectum
K62.6 is a valid, billable ICD-10-CM code for ulcer of anus and rectum. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K62.6
K62.6 is the ICD-10-CM diagnosis code for ulcer of anus and rectum. It belongs to category K62 (other diseases of anus and rectum), block K55-K64 (other diseases of intestines) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within K62 (other diseases of anus and rectum), K62.6 is specifically for ulcer of anus and rectum. Related codes cover 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), radiation proctitis (K62.7), other specified diseases of anus and rectum (K62.8) and 1 more.
Don't report K62.6 together with the conditions in its Excludes1 note: fissure and fistula of anus and rectum (K60.-) and ulcerative colitis (K51.-).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
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.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 569.41 (ulcer of anus and rectum).
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to K62.6.
Broader instructions also apply from Chapter 11: Diseases of the digestive system.
Alphabetic index entries
8 entriesTerms in the official ICD-10-CM index that lead to K62.6.
- Stercoraceous, stercoral ulcer › anus or rectum
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › anorectal
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › anus (sphincter) (solitary)
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › intestine, intestinal › rectum
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › rectum (sphincter) (solitary)
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › rectum (sphincter) (solitary) › stercoraceous, stercoral
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › solitary, anus or rectum (sphincter)
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › stercoraceous, stercoral › anus or rectum
Codes whose notes reference K62.6
- K63.3Excludes1
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 06 · Diseases and Disorders of the Digestive System
ICD-9-CM equivalent
Converter →- 569.41Ulcer of anus and rectumexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about K62.6
Is K62.6 billable?
- Yes. K62.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K62.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K62.6 as a principal diagnosis.
Is K62.6 a CC or MCC?
- K62.6 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does K62.6 group to?
- K62.6 is used in the MS-DRG v44.0 logic for MS-DRG 393 (Other Digestive System Diagnoses with MCC), MS-DRG 394 (Other Digestive System Diagnoses with CC) and MS-DRG 395 (Other Digestive System Diagnoses without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for K62.6?
- The CMS General Equivalence Mappings map K62.6 to ICD-9-CM 569.41.