K29.8 — Duodenitis

Not billable

Is K29.8 billable?

No — K29.8 is a non-billable header code. K29.8 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 2 billable codes beneath K29.8.

Billable codes under this header

K29.8 at a glance

Code	K29.8
Description	Duodenitis
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together — inherited from K29

The conditions below can never be reported together with K29.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

eosinophilic gastritis or gastroenteritis (K52.81)
Zollinger-Ellison syndrome (E16.4)

Excludes2 — not included here — inherited from Chapter 11

The conditions below are not part of K29.8, but a patient may have both at the same time. When documentation supports it, K29.8 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 K29.8, but a patient may have both at the same time. When documentation supports it, K29.8 and the excluded code may both be reported.

hiatus hernia (K44.-)

What codes fall under K29.8? (2)

How long has K29.8 existed?

K29.8 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.