Z99: Dependence on enabling machines and devices, not elsewhere classified
Codes under Z99 (Dependence on enabling machines and devices, not elsewhere classified). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Z99.0 | Dependence on aspirator | ✓ |
| Z99.0 | Dependence on aspirator | ✓ |
| Z99.1 | Dependence on respirator | — |
| Z99.1 | Dependence on respirator | — |
| Z99.2 | Dependence on renal dialysis | ✓ |
| Z99.2 | Dependence on renal dialysis | ✓ |
| Z99.3 | Dependence on wheelchair | ✓ |
| Z99.3 | Dependence on wheelchair | ✓ |
| Z99.8 | Dependence on other enabling machines and devices | — |
| Z99.8 | Dependence on other enabling machines and devices | — |
| Z99.11 | Dependence on respirator [ventilator] status | ✓ |
| Z99.11 | Dependence on respirator [ventilator] status | ✓ |
| Z99.12 | Encounter for respirator [ventilator] dependence during power failure | ✓ |
| Z99.12 | Encounter for respirator [ventilator] dependence during power failure | ✓ |
| Z99.81 | Dependence on supplemental oxygen | ✓ |
| Z99.81 | Dependence on supplemental oxygen | ✓ |
| Z99.89 | Dependence on other enabling machines and devices | ✓ |
| Z99.89 | Dependence on other enabling machines and devices | ✓ |
Frequently asked questions
What is ICD-10-CM code Z99?
Z99 is an ICD-10-CM category covering Dependence on enabling machines and devices, not elsewhere classified. It contains 18 more specific diagnosis codes, 14 of which are billable.
Is Z99 a billable code?
No — Z99 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example Z99.0 — Dependence on aspirator). 14 of the 18 codes under Z99 are billable.
What codes fall under Z99?
Z99 includes Z99.0, Z99.0, Z99.1, Z99.1, Z99.2, plus 13 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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