R59.9

R59.9: Enlarged lymph nodes, unspecified

Billable / specific codeICD-10-CM

R59.9 is a billable, specific ICD-10-CM code for enlarged lymph nodes, unspecified. It is valid for submission on a claim.

Check R59.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above R59.9

A category’s note binds every code beneath it.

Written on R59: Enlarged lymph nodes

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

Other codes that can never be billed with R59.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

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

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

R59.9 is named in 9 Medicare coverage policies: 9 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A55717Billing and Coding: Lab: Flow Cytometry
A56421Billing and Coding: CT of the Abdomen and Pelvis
A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography
A56464Billing and Coding: Flow Cytometry

Alphabetic index entries that lead here

Adenopathy(lymph gland)
Enlargement, enlarged›lymph gland or node
Hyperplasia, hyperplastic›lymph gland or node
Hypertrophy, hypertrophic›gland, glandular
Hypertrophy, hypertrophic›lymph, lymphatic gland
Swelling›glands

Code history

Unchanged in every release from FY2024 to FY2027.