ICD-10 Code K64 – Hemorrhoids and perianal venous thrombosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K64 – Hemorrhoids and perianal venous thrombosis
What it is
K64 identifies hemorrhoids and perianal venous thrombosis. Use it for documented swelling or thrombosis of veins in the anal or perianal area, when the record supports that diagnosis.
Clinical signs
Typical findings include anal pain, itching, bleeding, or a palpable tender lump near the anus. Clinical features vary; refer to documentation.
When to use this code
Use K64 when the provider documents hemorrhoids, perianal venous thrombosis, or both, and no more specific subtype is recorded. It also fits encounters where symptoms are evaluated and the diagnosis is confirmed in the note.
If the record only says rectal bleeding, anal pain, or constipation without a diagnosis, you should not code K64. Check documentation for the confirmed condition and any stated location or type.
Do not use for
Do not use this code for nonspecific anorectal symptoms alone or for conditions outside the hemorrhoidal/perianal venous thrombosis category. Check documentation if the provider describes another anal disorder.
Coding tip
Capture the exact provider wording, especially whether the note identifies hemorrhoids, perianal venous thrombosis, or an unspecified form.