ICD-10-CM 2027
ICD-10 code for subacute lymphangitis
From the official ICD-10-CM alphabetic index entry “Lymphangitis › subacute (any site)”. Page updated September 29, 2026.
About coding subacute lymphangitis
The ICD-10-CM code for subacute lymphangitis is I89.1 (Lymphangitis).
Within I89 (other noninfective disorders of lymphatic vessels and lymph nodes), I89.1 is specifically for lymphangitis. Related codes cover lymphedema, not elsewhere classified (I89.0), other specified noninfective disorders of lymphatic vessels and lymph nodes (I89.8) and noninfective disorder of lymphatic vessels and lymph nodes, unspecified (I89.9).
Don't report I89.1 together with the conditions in its Excludes1 note: acute lymphangitis (L03.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for I89.1)
- acute lymphangitis (L03.-)
Common questions about subacute lymphangitis ICD-10 codes
What is the ICD-10 code for subacute lymphangitis?
- I89.1 — Lymphangitis.
Is I89.1 billable?
- Yes. I89.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I89.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I89.1 as a principal diagnosis.
Is I89.1 a CC or MCC?
- No. I89.1 is neither a CC nor an MCC under MS-DRG v44.0.