K28
K28 — Gastrojejunal ulcer
Non-billable headerICD-10-CM
K28 is a non-billable header ICD-10-CM code for gastrojejunal ulcer. 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.
- primary ulcer of small intestine (K63.3)
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.
- anastomotic ulcer (peptic) or erosion
- gastrocolic ulcer (peptic) or erosion
- gastrointestinal ulcer (peptic) or erosion
- gastrojejunal ulcer (peptic) or erosion
- jejunal ulcer (peptic) or erosion
- marginal ulcer (peptic) or erosion
- stomal ulcer (peptic) or erosion
Other codes that can never be billed with K28
These codes carry an Excludes1 note pointing at K28. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K28 alone.
Risk adjustment
K28 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 K28
9 child codes. Green means billable.
- K28.0Acute gastrojejunal ulcer with hemorrhage
- K28.1Acute gastrojejunal ulcer with perforation
- K28.2Acute gastrojejunal ulcer with both hemorrhage and perforation
- K28.3Acute gastrojejunal ulcer without hemorrhage or perforation
- K28.4Chronic or unspecified gastrojejunal ulcer with hemorrhage
- K28.5Chronic or unspecified gastrojejunal ulcer with perforation
- K28.6Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation
- K28.7Chronic gastrojejunal ulcer without hemorrhage or perforation
- K28.9Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
Questions about K28
- Is K28 a billable ICD-10-CM code?
- No. K28 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does K28 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 K28?
- K28 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.