Is R59 a billable ICD-10-CM code?

No. R59 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does R59 sit in the tabular list?

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block General symptoms and signs (R50-R69).

What cannot be coded together with R59?

R59 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

R59

R59 — Enlarged lymph nodes

Non-billable headerICD-10-CM

R59 is a non-billable header ICD-10-CM code for enlarged lymph nodes. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

lymphadenitis NOS (I88.9)
acute lymphadenitis (L04.-)
chronic lymphadenitis (I88.1)
mesenteric (acute) (chronic) lymphadenitis (I88.0)

Includes

Conditions this code covers.

swollen glands

Other codes that can never be billed with R59

These codes carry an Excludes1 note pointing at R59. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R59 alone.

I88Nonspecific lymphadenitis
I89Other noninfective disorders of lymphatic vessels and lymph nodes
L04Acute lymphadenitis
R22Localized swelling, mass and lump of skin and subcutaneous tissue

Risk adjustment

R59 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

R59 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead R59

3 child codes. Green means billable.

Questions about R59

Is R59 a billable ICD-10-CM code?: No. R59 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does R59 sit in the tabular list?: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block General symptoms and signs (R50-R69).
What cannot be coded together with R59?: R59 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.