Is K50.018 a billable ICD-10-CM code?

Yes. K50.018 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does K50.018 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Noninfective enteritis and colitis (K50-K52).

What cannot be coded together with K50.018?

K50.018 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above K50.018 (K50.0, K50) and apply to it just the same.

K50.018

K50.018 — Crohn's disease of small intestine with other complication

Billable / specific codeICD-10-CM

K50.018 is a billable, specific ICD-10-CM code for crohn's disease of small intestine with other complication. It is valid for submission on a claim.

Excludes1 inherited from the categories above K50.018

These are not written on K50.018, but they bind it: a note on a category applies to every code beneath it. Billing K50.018 with anything listed here is a denial.

Written on K50.0 — Crohn's disease of small intestine

Crohn's disease of both small and large intestine (K50.8-)

Written on K50 — Crohn's disease [regional enteritis]

ulcerative colitis (K51.-)

Other codes that can never be billed with K50.018

These codes carry an Excludes1 note pointing at K50.018. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K50.018 alone.

E55.0Rickets, active
K51Ulcerative colitis

Risk adjustment

K50.018 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 80 Crohn's Disease (Regional Enteritis)0.550 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

K50.018 is named in 35 Medicare coverage policies — 35 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52423Billing and Coding: Infliximab and biosimilars
A52423Billing and Coding: Infliximab and biosimilars
A55937Billing and Coding: Diagnostic Colonoscopy
A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization

How K50.018 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 K50.018.

Enteritis›regional›small intestine›with›complication›specified complication NEC

Code history

K50.018 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share K50.01. If K50.018 is not quite right, the correct code is usually one of these.

Questions about K50.018

Is K50.018 a billable ICD-10-CM code?: Yes. K50.018 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does K50.018 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Noninfective enteritis and colitis (K50-K52).
What cannot be coded together with K50.018?: K50.018 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above K50.018 (K50.0, K50) and apply to it just the same.