Is K27 a billable ICD-10-CM code?

No. K27 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does K27 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Diseases of esophagus, stomach and duodenum (K20-K31).

What cannot be coded together with K27?

K27 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

K27

K27 — Peptic ulcer, site unspecified

Non-billable headerICD-10-CM

K27 is a non-billable header ICD-10-CM code for peptic ulcer, site unspecified. 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.

peptic ulcer of newborn (P78.82)

Use additional code

Add a secondary code to capture the detail described below.

code to identify:
alcohol abuse and dependence (F10.-)

Includes

Conditions this code covers.

gastroduodenal ulcer NOS
peptic ulcer NOS

Other codes that can never be billed with K27

These codes carry an Excludes1 note pointing at K27. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K27 alone.

K25Gastric ulcer
K26Duodenal ulcer
K63.3Ulcer of intestine

Risk adjustment

K27 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 K27

9 child codes. Green means billable.

Questions about K27

Is K27 a billable ICD-10-CM code?: No. K27 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does K27 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Diseases of esophagus, stomach and duodenum (K20-K31).
What cannot be coded together with K27?: K27 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.