R59: Enlarged lymph nodes
Codes under R59 (Enlarged lymph nodes). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| R59.0 | Localized enlarged lymph nodes | ✓ |
| R59.0 | Localized enlarged lymph nodes | ✓ |
| R59.1 | Generalized enlarged lymph nodes | ✓ |
| R59.1 | Generalized enlarged lymph nodes | ✓ |
| R59.9 | Enlarged lymph nodes, unspecified | ✓ |
| R59.9 | Enlarged lymph nodes, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code R59?
R59 is an ICD-10-CM category covering Enlarged lymph nodes. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is R59 a billable code?
No — R59 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 R59.0 — Localized enlarged lymph nodes). 6 of the 6 codes under R59 are billable.
What codes fall under R59?
R59 includes R59.0, R59.0, R59.1, R59.1, R59.9, plus 1 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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