2027 ICD-10-CM Diagnosis Code K60.312Anal fistula, simple, persistent

ICD-10-CM Codes›K00–K95›K55-K64›K60

ICD-10-CM K60.312
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K60.312 is a billable ICD-10-CM diagnosis code for anal fistula, simple, persistent. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 393 through 395. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Anal and rectal conditions.

Code Identity

ICD-10-CM Code
K60.312
Billable Status
Yes — Valid for Submission
Code Describes
Anal fistula, simple, persistent
Short Description
Anal fistula, simple, persistent
Same as the full description in the CMS dataset.
Parent Code
K60.31
Anal fistula, simple

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK60Fissure and fistula of anal and rectal regions
This CodeK60.312Anal fistula, simple, persistent

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K60.312: its own notes plus those printed at K60.3, K60, and Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Anal fistula, simple, chronic

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From K60.3 Anal fistula applies to 9 codes
  • congenital fistula (Q43.6)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From K60 Fissure and fistula of anal and rectal regions applies to 30 codes
  • abscess or cellulitis of anal and rectal regions (K61.-)
  • anal sphincter tear (healed) (nontraumatic) (old) (K62.81)
From Chapter 11 (K00-K95) Diseases of the digestive system applies to 863 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Code First

The underlying condition named in the note is sequenced before this code.

From K60.3 Anal fistula applies to 9 codes
  • if applicable:
  • Crohn's disease (K50.-)
  • ulcerative colitis (K51.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K60.312, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming K60.312: they are not reported together with it, unless the two conditions are unrelated.

  • K62.6 Ulcer of anus and rectum
    fissure and fistula of anus and rectum (K60.-) names K60.-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming K60.312: its condition is not part of those codes, and both may be reported when the patient has both.

  • K62.81 Anal sphincter tear (healed) (nontraumatic) (old)
    anal fissure (K60.-) names K60.-, which includes this code
  • K63.2 Fistula of intestine
    fistula of anal and rectal regions (K60.-) names K60.-, which includes this code

Use Additional Code 3

These codes say to use an additional code from the note, and K60.312 is one of the codes named.

  • K50 Crohn's disease [regional enteritis]
    anal fistula (K60.3-) names K60.3-, which includes this code
  • K51 Ulcerative colitis
    anal fistula (K60.3-) names K60.3-, which includes this code
  • T81.83 Persistent postprocedural fistula
    anal fistula (K60.3-) names K60.3-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 Fistula

    a pathologic tract that connects an opening in the anal canal to the perianal skin. in the vast majority of cases there is a history of perianal abscess.

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.

Code History & ChangesHistory

Replacement K60.312 replaces the following previously assigned code(s):

  • K60.3 - Anal fistula
FY 2025AddedAdded to the ICD-10-CM code setEffective October 1, 2024.
FY 2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K60.312Overview

What is the ICD-10 code for anal fistula, simple, persistent?

The ICD-10-CM code for anal fistula, simple, persistent is K60.312 (sometimes written as K60312). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is K60.312 (Anal fistula, simple) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report anal fistula, simple, persistent on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does K60.312 group to?

When anal fistula, simple, persistent is the principal diagnosis on an inpatient stay, it groups to MS-DRG 394, 395, 393, with relative weights from 0.6379 to 1.5877 depending on complications. Higher weights mean higher Medicare reimbursement.

Can K60.312 be reported with Q43.6?

Not as a rule. The Excludes1 note at K60.3, which applies to K60.312, lists "congenital fistula (Q43.6)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is coded first with K60.312?

The Code First note at K60.3, which applies to K60.312, reads: , if applicable: Crohn's disease (K50.-); ulcerative colitis (K51.-). When one of these applies, it is sequenced before K60.312.