K31

Header — not billable

Other diseases of stomach and duodenum

The ICD-10 code for other diseases of stomach and duodenum is K31.

K31 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 11 more specific codes below.

Clinical notes

Excludes2 (not included here)

An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.

diabetic gastroparesis (E08.43, E09.43, E10.43, E11.43, E13.43)
diverticulum of duodenum (K57.00-K57.13)

Includes

Terms listed here further define or give examples of the conditions grouped under this code — they describe what the code covers, not a separate diagnosis.

functional disorders of stomach

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

K31

Clinical notes

Excludes2 (not included here)

Includes

Documentation support

Child codes under K31

Related codes in this category