R59 ICD-10-CM Code: Enlarged lymph nodes
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
R59Enlarged lymph nodes
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where R59 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
General symptoms and signs (R50-R69)
- 3
Category R59
Enlarged lymph nodes
- 4
Code R59
Enlarged lymph nodes
More specific choices
Codes under R59
R59 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for R59.
Code first
No “code first” instruction is listed for R59.
Use additional code
No “use additional code” instruction is listed for R59.
Excludes1
Conditions that should not be reported together with this code.
- lymphadenitis NOS (I88.9)
- acute lymphadenitis (L04.-)
- chronic lymphadenitis (I88.1)
- mesenteric (acute) (chronic) lymphadenitis (I88.0)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for R59.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code R59 mean?
R59 is the FY 2027 U.S. ICD-10-CM code for “Enlarged lymph nodes.”
Is R59 a billable or specific ICD-10-CM code?
No. R59 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is R59 located in ICD-10-CM?
R59 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within General symptoms and signs (R50-R69) (R50–R69), under category R59, Enlarged lymph nodes.
What coding notes are listed for R59?
No inclusion terms are listed for R59 in this reference record. No code-first instruction is listed. Excludes1 notes: lymphadenitis NOS (I88.9); acute lymphadenitis (L04.-); chronic lymphadenitis (I88.1); mesenteric (acute) (chronic) lymphadenitis (I88.0). No Excludes2 note is listed.
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