R59.9Billable

Enlarged lymph nodes, unspecified

Chapter
18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Category
R59
Effective date
October 1, 2026

Related codes in category R59

R59Enlarged lymph nodesR59.0Localized enlarged lymph nodesYesR59.1Generalized enlarged lymph nodesYes

Frequently asked questions

What is ICD-10 code R59.9?

R59.9 is an ICD-10-CM diagnosis code for Enlarged lymph nodes, unspecified.

Is R59.9 a billable code?

Yes. R59.9 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is R59.9 in?

R59.9 falls under Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

When did R59.9 become effective?

R59.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to R59.9?

R59.9 belongs to category R59, which includes 3 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.