What is a perianal fistula?
A perianal fistula is a small tunnel located underneath the skin connecting the interior of the anus and the surrounding skin, and it usually occurs after the abscess is drained.
What are the common symptoms of a perianal fistula?
Symptoms include pus or blood leakage near the anus, pain or swelling in the area, skin irritation or redness, discomfort when sitting, and sometimes fever.
What causes a perianal fistula?
Fistulas would normally start with a blocked gland or abscess; other reasons would be the Crohn disease, ulcerative colitis, prior injuries, radiation, or uncommon infections like tuberculosis or STIs.
Will a perianal fistula heal on its own?
Generally no-most perianal fistulas require medical or surgical treatment to fully heal and prevent complications.
What ICD-10 code is used for a perianal fistula?
K60.3 is the ICD-10 code of a perianal fistula.
Are there non-surgical treatments available?
Yes. Non-surgical options may include antibiotics, anti-inflammatory medications, fibrin glue, laser therapy, and biologic drugs for Crohn's-related fistulas.
How long is the recovery after treatment?
The recovery time is dependent on the kind of treatment that the patient received, however; most patients are cured within 4 to 6 weeks after proper treatment.
Can Crohn's disease lead to a perianal fistula?
Yes. Crohn's disease is a common underlying cause of perianal fistulas due to chronic intestinal inflammation.
Are non-surgical treatments always sufficient?
In certain situations, non-surgery might be used successfully, however, it seems that in most instances, the patient needs to undergo surgery to ensure full recovery.
When should I see a doctor about symptoms?
If you experience persistent pain, swelling, or drainage near the anus for more than a week, you should seek medical evaluation.
Medically Reviewed by
Dr. Bharat Pothuri, MD, FACG
| Updated 03-17-2026