R59.9

Enlarged lymph nodes, unspecified

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from R59Enlarged lymph nodes
Includes

swollen glands

Excludes 1

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

Inherited from chapter 18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Excludes 2

abnormal findings on antenatal screening of mother (O28.-) certain conditions originating in the perinatal period (P04-P96) signs and symptoms classified in the body system chapters signs and symptoms of breast (N63, N64.5)

Official Guidelines for R59.9

FY 2026 ›
I.C.18Chapter-specific guidanceChapter 18: Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

Subsections

Sections that reference R59.9

Sections whose FY 2026 text names R59.9, its R59 category, or a range containing it — the chapter guidance above is the authoritative source.

Find R59.9 in the alphabetic index

6 index paths lead to this code