K60.421
✓ Billable
Rectal fistula, complex, initial
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K60.421
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code K60.421?
ICD-10-CM code K60.421 represents Rectal fistula, complex, initial. It is a billable diagnosis code in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K60.421 billable?
Yes. K60.421 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is K60.421 in?
K60.421 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K60 category
K60
Fissure and fistula of anal and rectal regions
Non-billable
K60.0
Acute anal fissure
Billable
K60.1
Chronic anal fissure
Billable
K60.2
Anal fissure, unspecified
Billable
K60.3
Anal fistula
Non-billable
K60.4
Rectal fistula
Non-billable
K60.5
Anorectal fistula
Non-billable
K60.30
Anal fistula, unspecified
Billable
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