Functional dyspepsia
In Diseases of esophagus, stomach and duodenum (K20-K31), chapter 11: Diseases of the Digestive System
- K30 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under K20-K31 below.
- As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
- Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
- AHRQ's Chronic Condition Indicator classes it as not chronic (an acute or short-term condition).
Also indexed as: Acid, peptic disease; Acid, stomach; Acidity; Apepsia; Delay, gastric emptying; Disease, acid-peptic; Disorder, gastric, motility; Disorder, gastric, secretion; Distress, gastrointestinal; Disturbance, digestive; Disturbance, gastrointestinal; Dyspepsia, atonic; Dyspepsia, functional; Indigestion; Upset, gastric; Upset, gastrointestinal; Upset, stomach
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Instructional notes
Also applies, from Diseases of esophagus, stomach and duodenum (K20-K31)
These notes sit on K20-K31 and apply to every code under it, including K30.
Excludes2: not included here, code separately if applicable
- hiatus hernia (K44.-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
There are no chapter-specific rules for Chapter 11 yet, so the general rules in Section I.B apply.
Other codes under K20-K31
Diseases of esophagus, stomach and duodenum (K20-K31)
- K20Esophagitis
- K21Gastro-esophageal reflux disease
- K22Other diseases of esophagus
- K23Disorders of esophagus in diseases classified elsewhere
- K25Gastric ulcer
- K26Duodenal ulcer
- K27Peptic ulcer, site unspecified
- K28Gastrojejunal ulcer
- K29Gastritis and duodenitis
- K30Functional dyspepsia(this code)
- K31Other diseases of stomach and duodenum
K30 MS-DRGs
As the principal diagnosis, K30 groups to MS-DRG 391 or 392 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Related conditions
Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.
K30 is in Other specified and unspecified disorders of stomach and duodenum (DIG008, its default category), with 25 codes. Others in it:
- K31.0 Acute dilatation of stomach
- K31.1 Adult hypertrophic pyloric stenosis
- K31.2 Hourglass stricture and stenosis of stomach
- K31.3 Pylorospasm, not elsewhere classified
- K31.4 Gastric diverticulum
- K31.6 Fistula of stomach and duodenum
- K31.7 Polyp of stomach and duodenum
- K31.811 Angiodysplasia of stomach and duodenum with bleeding
Medicare coverage articles listing K30
These 3 Medicare billing and coding articles list K30 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.
Other codes that refer to K30
Notes on these codes point to K30.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Indigestion
Nearly everyone has had indigestion at one time. It's a feeling of discomfort or a burning feeling in your upper abdomen. You may have heartburn or belch and feel bloated. You may also feel nauseated, or even throw up.
Read more about indigestion on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.
ICD-9-CM equivalent
Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).
- 536.8 Dyspepsia and other specified disorders of function of stomach