K60.31 Anal fistula, simple

Non-billable header with 4 child codes.

Applicable to

• Low intersphincteric anal fistula
• Superficial anal fistula

Applies from K60 Fissure and fistula of anal and rectal regions

Excludes1 (never code together)

• fissure and fistula of anal and rectal regions with abscess or cellulitis (K61.-)

Excludes2 (not included here)

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

Applies from K60.3 Anal fistula

Excludes1 (never code together)

• congenital fistula (Q43.6)

Code first

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

Codes under K60.31

• K60.311 Anal fistula, simple, initial
• K60.312 Anal fistula, simple, persistent
• K60.313 Anal fistula, simple, recurrent
• K60.319 Anal fistula, simple, unspecified

Code annotations containing back-references to K60.31

Back-references to K60.3

• Use Additional: K50 Crohn's disease [regional enteritis] ("anal fistula (K60.3-)")
• Use Additional: K51 Ulcerative colitis ("anal fistula (K60.3-)")
• Use Additional: T81.83 Persistent postprocedural fistula ("anal fistula (K60.3-)")

Back-references to K60

• Type 1 Excludes: K62.6 Ulcer of anus and rectum ("fissure and fistula of anus and rectum (K60.-)")
• Type 2 Excludes: K62.81 Anal sphincter tear (healed) (nontraumatic) (old) ("anal fissure (K60.-)")
• Type 2 Excludes: K63.2 Fistula of intestine ("fistula of anal and rectal regions (K60.-)")

Diagnosis Index entries for K60.31

• Fistula (cutaneous) › anus, anal (recurrent) (infectional) › low intersphincteric
• Fistula (cutaneous) › anus, anal (recurrent) (infectional) › superficial

Nearby codes

• K60.0 Acute anal fissure
• K60.1 Chronic anal fissure
• K60.2 Anal fissure, unspecified
• K60.3 Anal fistula
• K60.30 Anal fistula, unspecified
• K60.31 Anal fistula, simple (this code)
• K60.311 Anal fistula, simple, initial
• K60.312 Anal fistula, simple, persistent
• K60.313 Anal fistula, simple, recurrent
• K60.319 Anal fistula, simple, unspecified
• K60.32 Anal fistula, complex