| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| 0D9Q80Z (Procedure) - Drainage of Anus with Drainage Device, Endo (Drainage of Anus with Drainage Device, Via Natural or Artificial Opening Endoscopic) | Single To Single | 4901 (Procedure) - Incis perianal abscess (Incision of perianal abscess) |
| CMS/CDC General Equivalence Mappings |
| 0D9Q80Z (Procedure) - Drainage of Anus with Drainage Device, Endo (Drainage of Anus with Drainage Device, Via Natural or Artificial Opening Endoscopic) | Single To Single | Alternative #1: 4901 (Procedure) - Incis perianal abscess (Incision of perianal abscess) |
Single To Single | Alternative #2: 4902 (Procedure) - Perianal incision NEC (Other incision of perianal tissue) |