Is K50 a billable ICD-10-CM code?

No. K50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does K50 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?

K50 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

K50

K50 — Crohn's disease [regional enteritis]

Non-billable headerICD-10-CM

K50 is a non-billable header ICD-10-CM code for crohn's disease [regional enteritis]. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

ulcerative colitis (K51.-)

Use additional code

Add a secondary code to capture the detail described below.

code to identify any associated fistulas, if applicable:
anal fistula (K60.3-)
anorectal fistula (K60.5-)
rectal fistula (K60.4-)
code to identify manifestations, such as:
pyoderma gangrenosum (L88)

Includes

Conditions this code covers.

granulomatous enteritis

Other codes that can never be billed with K50

These codes carry an Excludes1 note pointing at K50. 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 alone.

E55.0Rickets, active
K50.0Crohn's disease of small intestine
K50.1Crohn's disease of large intestine
K51Ulcerative colitis
K63.0Abscess of intestine
K63.2Fistula of intestine

Risk adjustment

K50 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.

Code to one of these instead K50

4 child codes. Green means billable.

Questions about K50

Is K50 a billable ICD-10-CM code?: No. K50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does K50 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?: K50 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.