R59 — Enlarged lymph nodes
Is R59 billable?
No — R59 is a non-billable header code. R59 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath R59.
Billable codes under this header
R59 at a glance
| Code | R59 |
|---|---|
| Description | Enlarged lymph nodes |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with R59 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Includes
Conditions classified to R59.
- swollen glands
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R59, but a patient may have both at the same time. When documentation supports it, R59 and the excluded code may both be reported.
What codes fall under R59? (3)
How long has R59 existed?
R59 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with R59?
ICD-10-CM declares these codes mutually exclusive with R59 — exactly one of each pair can be correct for a given encounter.