ICD-10-CM > R00-R99 > R50-R69 > R59 R59 Enlarged lymph nodes Non-Billable/Non-Specific Includes swollen glands Type 1 Excludes lymphadenitis NOS (I88.9)acute lymphadenitis (L04.-)chronic lymphadenitis (I88.1)mesenteric (acute) (chronic) lymphadenitis (I88.0) Codes R59.0Localized enlarged lymph nodesR59.1Generalized enlarged lymph nodesR59.9Enlarged lymph nodes, unspecified