A43: Nocardiosis
Codes under A43 (Nocardiosis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A43.0 | Pulmonary nocardiosis | ✓ |
| A43.0 | Pulmonary nocardiosis | ✓ |
| A43.1 | Cutaneous nocardiosis | ✓ |
| A43.1 | Cutaneous nocardiosis | ✓ |
| A43.8 | Other forms of nocardiosis | ✓ |
| A43.8 | Other forms of nocardiosis | ✓ |
| A43.9 | Nocardiosis, unspecified | ✓ |
| A43.9 | Nocardiosis, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code A43?
A43 is an ICD-10-CM category covering Nocardiosis. It contains 8 more specific diagnosis codes, 8 of which are billable.
Is A43 a billable code?
No — A43 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 A43.0 — Pulmonary nocardiosis). 8 of the 8 codes under A43 are billable.
What codes fall under A43?
A43 includes A43.0, A43.0, A43.1, A43.1, A43.8, plus 3 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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