K29 — Gastritis and duodenitis
Is K29 billable?
No — K29 is a non-billable header code. K29 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 18 billable codes beneath K29.
Billable codes under this header
- K29.00Acute gastritis without bleeding
- K29.01Acute gastritis with bleeding
- K29.20Alcoholic gastritis without bleeding
- K29.21Alcoholic gastritis with bleeding
- K29.30Chronic superficial gastritis without bleeding
- K29.31Chronic superficial gastritis with bleeding
- K29.40Chronic atrophic gastritis without bleeding
- K29.41Chronic atrophic gastritis with bleeding
- K29.50Unspecified chronic gastritis without bleeding
- K29.51Unspecified chronic gastritis with bleeding
- K29.60Other gastritis without bleeding
- K29.61Other gastritis with bleeding
- K29.70Gastritis, unspecified, without bleeding
- K29.71Gastritis, unspecified, with bleeding
- K29.80Duodenitis without bleeding
- K29.81Duodenitis with bleeding
- K29.90Gastroduodenitis, unspecified, without bleeding
- K29.91Gastroduodenitis, unspecified, with bleeding
K29 at a glance
| Code | K29 |
|---|---|
| Description | Gastritis and duodenitis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with K29 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K29, but a patient may have both at the same time. When documentation supports it, K29 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 K29, but a patient may have both at the same time. When documentation supports it, K29 and the excluded code may both be reported.
- hiatus hernia (K44.-)
What codes fall under K29? (9)
- K29.0Acute gastritisnot billable
- K29.2Alcoholic gastritisnot billable
- K29.3Chronic superficial gastritisnot billable
- K29.4Chronic atrophic gastritisnot billable
- K29.5Unspecified chronic gastritisnot billable
- K29.6Other gastritisnot billable
- K29.7Gastritis, unspecifiednot billable
- K29.8Duodenitisnot billable
- K29.9Gastroduodenitis, unspecifiednot billable
How long has K29 existed?
K29 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 K29?
ICD-10-CM declares these codes mutually exclusive with K29 — exactly one of each pair can be correct for a given encounter.