2026 ICD-10-CM Diagnosis Code K62.9Disease of anus and rectum, unspecified

ICD-10-CM Codes›K00–K95›K55-K64›K62

ICD-10-CM K62.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K62.9 is a billable ICD-10-CM diagnosis code for disease of anus and rectum, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 393 through 395. Coders also document this condition as anorectal disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Anal and rectal conditions.

Code Identity

ICD-10-CM Code
K62.9
Billable Status
Yes — Valid for Submission
Code Describes
Disease of anus and rectum, unspecified
Short Description
Disease of anus and rectum, unspecified
Same as the full description in the CMS dataset.
Parent Code
K62
Other diseases of anus and rectum

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK62Other diseases of anus and rectum
This CodeK62.9Disease of anus and rectum, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anorectal disorder
  • Disorder of anal canal
  • Disorder of anal region
  • Disorder of anus
  • Disorder of rectum
  • Functional anorectal disorder

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disease, diseased
      • anus
    • Disease, diseased
      • rectum
    • Lesion(s) (nontraumatic)
      • anorectal

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG015
Anal and rectal conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Anorectal Disorder

    a non-neoplastic or neoplastic disorder that affects the anus and rectum.

  • Non-Neoplastic Anorectal Disorder

    a non-neoplastic disorder that affects the anus and rectum.

Patient EducationClinical

Anal Disorders

Your anus is the opening at the end of your large intestine. It is where stool (poop) leaves your body.

The full article covers:

  • What is the anus?
  • What are anal disorders?
  • What are the symptoms of anal disorders?
  • How are anal disorders diagnosed?
  • How are anal disorders treated?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K62.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
569.49 Rectal & anal dis NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K62.9Overview

Is K62.9 (Other diseases of anus and rectum) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disease of anus and rectum, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K62.9 group to?

When disease of anus and rectum, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 393, 394, 395, with relative weights from 0.6490 to 1.5993 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K62.9?

Under the General Equivalence Mappings, disease of anus and rectum, unspecified converts to ICD-9-CM 569.49 (rectal & anal dis NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.