FY2026 · April
Effective from
- Inherited rules changed
Anorectal fistula, complex
Category — select a more specific code
CDC/NCHS · FY2026 · Aprilcongenital fistula (Q43.6)
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2024-10-01
Latest recorded change · FY2026 · April
Effective from
Anorectal fistula, complex
Category — select a more specific code
CDC/NCHS · FY2026 · April| All editions | Effective from | Code history |
|---|---|---|
| FY2025 | 2024-10-01 | Added |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | Inherited rules changed |
| FY2027 | 2026-10-01 | No tabular change |
congenital fistula (Q43.6)
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| K60.50 | Anorectal fistula, unspecified | Billable / specific |
| K60.51 | Anorectal fistula, simple | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗