K31.8 — Other specified diseases of stomach and duodenum
Is K31.8 billable?
No — K31.8 is a non-billable header code. K31.8 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 6 billable codes beneath K31.8.
K31.8 at a glance
| Code | K31.8 |
|---|---|
| Description | Other specified diseases of stomach and duodenum |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K31.8, but a patient may have both at the same time. When documentation supports it, K31.8 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from K20-K31
The conditions below are not part of K31.8, but a patient may have both at the same time. When documentation supports it, K31.8 and the excluded code may both be reported.
- hiatus hernia (K44.-)
Excludes2 — not included here — inherited from K31
The conditions below are not part of K31.8, but a patient may have both at the same time. When documentation supports it, K31.8 and the excluded code may both be reported.
What codes fall under K31.8? (5)
How long has K31.8 existed?
K31.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the K31 family? (11)
- K31.0Acute dilatation of stomach
- K31.1Adult hypertrophic pyloric stenosis
- K31.BHypertrophic pyloric stenosis, in childhood
- K31.2Hourglass stricture and stenosis of stomach
- K31.3Pylorospasm, not elsewhere classified
- K31.4Gastric diverticulum
- K31.5Obstruction of duodenum
- K31.6Fistula of stomach and duodenum
- K31.7Polyp of stomach and duodenum
- K31.9Disease of stomach and duodenum, unspecified
- K31.AGastric intestinal metaplasianot billable