R59.0

ICD-10Billable

Localized enlarged lymph nodes

Official ICD-10-CM descriptor (FY2026)

Localized enlarged lymph nodes

R59.0 is valid for submission on a claim — CMS flags it as a billable, specific code.

Related codes in R59

R59.1Generalized enlarged lymph nodes
R59.9Enlarged lymph nodes, unspecified

Where this code sits

Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: General symptoms and signs (R50-R69)
Parent code: R59

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.