ICD-10 Code for Adenopathy
Also indexed as (lymph gland)
The ICD-10-CM code for adenopathy is R59.9 — Enlarged lymph nodes, unspecified. This is the code the Alphabetic Index gives for adenopathy with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
R59.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which adenopathy code should you use?
The Alphabetic Index lists 6 codes under Adenopathy. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| generalized | R59.1 | Generalized enlarged lymph nodes | |
| inguinal | R59.0 | Localized enlarged lymph nodes | |
| localized | R59.0 | Localized enlarged lymph nodes | |
| mediastinal | R59.0 | Localized enlarged lymph nodes | |
| mesentery | R59.0 | Localized enlarged lymph nodes | |
| syphilitic | A51.49 | Other secondary syphilitic conditions | |
| tracheobronchial | R59.0 | Localized enlarged lymph nodes |
Adenopathy tracheobronchial
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources