K60.4 – Rectal fistula

ICD-10-CM 2027 diagnosis code · Other diseases of intestines

Non-billable header

ICD-10-CM code K60.4

Code: K60.4 (claims format: K604)
Description: Rectal fistula
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 11. Diseases of the digestive system (K00-K95)
Block: K55-K64 Other diseases of intestines
Parent codes: K60

Billable codes under K60.4

K60.4 is a header code and cannot be used on claims. Choose the most specific code:

K60.40 – Rectal fistula, unspecifiedBillable
K60.41 – Rectal fistula, simpleHeader (more codes below)
K60.42 – Rectal fistula, complexHeader (more codes below)

Notes for K60.4

Applicable to:

Fistula of rectum to skin

Excludes1 (not coded here):

congenital fistula (Q43.6)
rectovaginal fistula (N82.3)
vesicorectal fistual (N32.1)

Code first:

, if applicable:
Crohn's disease (K50.-)
ulcerative colitis (K51.-)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

K60 – Fissure and fistula of anal and rectal regions

Excludes2 (not included here):

abscess or cellulitis of anal and rectal regions (K61.-)
anal sphincter tear (healed) (nontraumatic) (old) (K62.81)

Related codes in K60

K60.0 – Acute anal fissureBillable
K60.1 – Chronic anal fissureBillable
K60.2 – Anal fissure, unspecifiedBillable
K60.3 – Anal fistulaHeader
K60.5 – Anorectal fistulaHeader

Frequently asked questions

What is ICD-10 code K60.4?

K60.4 is the ICD-10-CM code for rectal fistula, in the block K55-K64 (Other diseases of intestines).

Is K60.4 a billable code?

No. K60.4 is a header code with more specific child codes; report one of the billable codes listed above.

What category does K60.4 belong to?

It belongs to category K60 – Fissure and fistula of anal and rectal regions.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.