K62.6 Ulcer of anus and rectum

The ICD-10-CM code for Ulcer of anus and rectum is K62.6 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

11: Diseases of the digestive system (K00-K95)

Section

K55-K64: Other diseases of intestines (K55-K64)

Category K62

14 codes (12 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to K62.6:

• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › anus (sphincter) (solitary)
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › rectum (sphincter) (solitary)
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › solitary, anus or rectum (sphincter)
• Stercoraceous, stercoral ulcer › anus or rectum
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › anorectal
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › intestine, intestinal › rectum
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › rectum (sphincter) (solitary) › stercoraceous, stercoral
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › stercoraceous, stercoral › anus or rectum

Inclusion Terms

• Solitary ulcer of anus and rectum
• Stercoral ulcer of anus and rectum

U.S. Hospital Utilization

• An estimated 18,345 U.S. inpatient stays in 2023 included K62.6 among the documented diagnoses.
• 3,540 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)