R59.9
BillableEnlarged lymph nodes, unspecified
R59.9 is the ICD-10-CM code for Enlarged lymph nodes, unspecified. It is a billable, specific code valid for reimbursement.
R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
What this means — in plain language
MedlinePlus · NIHThe lymphatic system is a network of tissues and organs. It is made up of: Lymph - a fluid that contains white blood cells that defend against germs Lymph vessels - vessels that carry lymph throughout your body. They are different from blood vessels. Lymph nodes - glands found throughout the lymph vessels. Along with your spleen , these nodes are where white blood cells fight infection. Your bone marrow and thymus…
Read more about Lymphatic Diseases at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
- What is ICD-10 code R59.9?
- R59.9 is the ICD-10-CM code for "Enlarged lymph nodes, unspecified". It falls under R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
- Is R59.9 a billable code?
- Yes — R59.9 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition