I88.0 — Nonspecific mesenteric lymphadenitis
I88.0 is a billable, specific ICD-10-CM code for nonspecific mesenteric lymphadenitis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Mesenteric lymphadenitis (acute)(chronic)
Other codes that can never be billed with I88.0
These codes carry an Excludes1 note pointing at I88.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I88.0 alone.
Risk adjustment
I88.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
I88.0 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A56464Billing and Coding: Flow Cytometry
- A56775Billing and Coding: Magnetic Resonance Angiography
How I88.0 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I88.0.
- Brennemann's syndrome
- Adenitis›mesenteric(acute) (chronic) (nonspecific) (subacute)
- Infection, infected, infective›mesenteric lymph nodes or glands NEC
- Lymphadenitis›mesenteric(acute) (chronic) (nonspecific) (subacute)
- Abscess›lymph, lymphatic, gland or node›mesentery
- Infection, infected, infective›lymph gland›mesenteric
- Lymphadenitis›chronic›mesenteric
Related codes at this level
Codes that share I88. If I88.0 is not quite right, the correct code is usually one of these.
Questions about I88.0
- Is I88.0 a billable ICD-10-CM code?
- Yes. I88.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I88.0 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89).