I88.1

I88.1: Chronic lymphadenitis, except mesenteric

Billable / specific codeICD-10-CM

I88.1 is a billable, specific ICD-10-CM code for chronic lymphadenitis, except mesenteric. It is valid for submission on a claim.

Check I88.1 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Adenitis
Lymphadenitis

Excludes1 inherited from the categories above I88.1

A category’s note binds every code beneath it.

Written on I88: Nonspecific lymphadenitis

acute lymphadenitis, except mesenteric (L04.-)
enlarged lymph nodes NOS (R59.-)
human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)

Other codes that can never be billed with I88.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

L04Acute lymphadenitis
R59Enlarged lymph nodes

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I88.1 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56464Billing and Coding: Flow Cytometry
A56775Billing and Coding: Magnetic Resonance Angiography
A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

Adenitis›chronic, unspecified site
Adenitis›subacute, unspecified site
Lymphadenitis›chronic
Lymphadenitis›subacute, unspecified site
Adenitis›axillary›chronic or subacute
Adenitis›cervical›chronic or subacute
Adenitis›groin›chronic or subacute
Adenitis›inguinal›chronic or subacute
Adenitis›lymph gland or node, except mesenteric›chronic or subacute
Lymphadenitis›any site, except mesenteric›chronic
Lymphadenitis›any site, except mesenteric›subacute

Code history

Unchanged in every release from FY2024 to FY2027.