ICD-10-CM 2027
ICD-10 code for Caseation lymphatic gland
From the official ICD-10-CM alphabetic index entry “Caseation lymphatic gland (tuberculous)”. Page updated September 29, 2026.
About coding Caseation lymphatic gland
The ICD-10-CM code for Caseation lymphatic gland is A18.2 (Tuberculous peripheral lymphadenopathy).
Within A18 (tuberculosis of other organs), A18.2 is specifically for tuberculous peripheral lymphadenopathy. Related codes cover tuberculosis of bones and joints (A18.0), tuberculosis of genitourinary system (A18.1), tuberculosis of intestines, peritoneum and mesenteric glands (A18.3), tuberculosis of skin and subcutaneous tissue (A18.4), tuberculosis of eye (A18.5), tuberculosis of (inner) (middle) ear (A18.6), tuberculosis of adrenal glands (A18.7) and tuberculosis of other specified organs (A18.8).
The conditions in its Excludes2 note aren't part of A18.2, but may be coded alongside it if the patient has both: tuberculosis of bronchial and mediastinal lymph nodes (A15.4), tuberculosis of mesenteric and retroperitoneal lymph nodes (A18.39) and tuberculous tracheobronchial adenopathy (A15.4).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about Caseation lymphatic gland ICD-10 codes
What is the ICD-10 code for Caseation lymphatic gland?
- A18.2 — Tuberculous peripheral lymphadenopathy.
Is A18.2 billable?
- Yes. A18.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A18.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A18.2 as a principal diagnosis.
Is A18.2 a CC or MCC?
- A18.2 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.