ICD-10-CM · Chapter 21 · Z00-Z99
Z51 Encounter for other aftercare and medical care
Excludes 1 (cannot be coded together)
- follow-up examination after treatment (Z08-Z09)
Code Also
- condition requiring care
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| Z51..0 | Encounter for antineoplastic radiation therapy | Yes |
| Z51..1 | Encounter for antineoplastic chemotherapy and immunotherapy | No |
| Z51..11 | Encounter for antineoplastic chemotherapy | Yes |
| Z51..12 | Encounter for antineoplastic immunotherapy | Yes |
| Z51..5 | Encounter for palliative care | Yes |
| Z51..6 | Encounter for desensitization to allergens | Yes |
| Z51..8 | Encounter for other specified aftercare | No |
| Z51..81 | Encounter for therapeutic drug level monitoring | Yes |
| Z51..89 | Encounter for other specified aftercare | Yes |
| Z51..A | Encounter for sepsis aftercare | Yes |
Last reviewed: September 2026