K31.4 — Gastric diverticulum
Is K31.4 billable?
Yes — K31.4 is billable for FY2027. K31.4 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K31.4 may be submitted for encounters from October 1, 2026 through September 30, 2027.
K31.4 at a glance
| Code | K31.4 |
|---|---|
| Description | Gastric diverticulum |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K31.4 group to?
K31.4 sits in MDC 06 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCCmedical
- 392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCCmedical
How is K31.4 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K31.4. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Diverticulum, diverticula › cardia (multiple)
- Diverticulum, diverticula › gastric (multiple)
- Diverticulum, diverticula › stomach (multiple)
- Pouch › gastric
Excludes1 — never code together
The conditions below can never be reported together with K31.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- congenital diverticulum of stomach (Q40.2)
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K31.4, but a patient may have both at the same time. When documentation supports it, K31.4 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 K31.4, but a patient may have both at the same time. When documentation supports it, K31.4 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 K31.4, but a patient may have both at the same time. When documentation supports it, K31.4 and the excluded code may both be reported.
How long has K31.4 existed?
K31.4 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.
Which codes are confused with K31.4?
ICD-10-CM declares these codes mutually exclusive with K31.4 — exactly one of each pair can be correct for a given encounter.
Which conditions are coded to K31.4?
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
- K31.5Obstruction of duodenum
- K31.6Fistula of stomach and duodenum
- K31.7Polyp of stomach and duodenum
- K31.8Other specified diseases of stomach and duodenumnot billable
- K31.9Disease of stomach and duodenum, unspecified
- K31.AGastric intestinal metaplasianot billable