K60.3 – Anal fistula

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

Non-billable header

ICD-10-CM code K60.3

Code: K60.3 (claims format: K603)
Description: Anal 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 K60.3

K60.3 is a header code and cannot be used on claims. Choose the most specific code:

K60.30 – Anal fistula, unspecifiedBillable
K60.31 – Anal fistula, simpleHeader (more codes below)
K60.32 – Anal fistula, complexHeader (more codes below)

Notes for K60.3

Excludes1 (not coded here):

congenital fistula (Q43.6)

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
K60.4 – Rectal fistulaHeader
K60.5 – Anorectal fistulaHeader

Frequently asked questions

What is ICD-10 code K60.3?

K60.3 is the ICD-10-CM code for anal fistula, in the block K55-K64 (Other diseases of intestines).

Is K60.3 a billable code?

No. K60.3 is a header code with more specific child codes; report one of the billable codes listed above.

What category does K60.3 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.