2027 ICD-10-CM Diagnosis Code K30Functional dyspepsia

ICD-10-CM Codes›K00–K95›K20-K31›K30

ICD-10-CM K30
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K30 is a billable ICD-10-CM diagnosis code for functional dyspepsia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 391 through 392. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified disorders of stomach and duodenum.

Code Identity

ICD-10-CM Code
K30
Billable Status
Yes — Valid for Submission
Code Describes
Functional dyspepsia
Short Description
Functional dyspepsia
Same as the full description in the CMS dataset.
Chapter
K20-K31
Diseases of esophagus, stomach and duodenum

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK20-K31Diseases of esophagus, stomach and duodenum
CategoryK30Functional dyspepsia
This CodeK30Functional dyspepsia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal gastric acidity
  • Abnormal gastric secretion
  • Delayed gastric emptying
  • Dyspepsia caused by drug
  • Dyspepsia during pregnancy
  • Finding of general observation of digestion
  • Flatulent dyspepsia
  • Impaired gastric emptying
  • Indigestion
  • Inhibition of gastric motility
  • Mild dietary indigestion
  • Nonulcer dyspepsia
  • Postprandial distress syndrome
  • Upset stomach

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K30: its own notes plus those printed at block K20-K31 and Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Indigestion

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block K20-K31 Diseases of esophagus, stomach and duodenum applies to 106 codes
From Chapter 11 (K00-K95) Diseases of the digestive system applies to 863 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K30, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming K30: they are not reported together with it, unless the two conditions are unrelated.

  • R10.13 Epigastric pain
    functional dyspepsia (K30)
  • R12 Heartburn
    functional dyspepsia (K30)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG008
Other specified and unspecified disorders of stomach and duodenum
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Dyspepsia

    impaired digestion, especially after eating.

Patient EducationClinical

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 the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K30 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
536.8 Stomach function dis NEC
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K30Overview

What is the ICD-10 code for functional dyspepsia?

The ICD-10-CM code for functional dyspepsia is K30. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is K30 (Functional dyspepsia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report functional dyspepsia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does K30 group to?

When functional dyspepsia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 392, 391, with relative weights from 0.7645 to 1.2389 depending on complications. Higher weights mean higher Medicare reimbursement.

Can K30 be reported with R10.13?

Not as a rule. The Excludes1 note on K30 lists "dyspepsia NOS (R10.13)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of K30?

Under the General Equivalence Mappings, functional dyspepsia converts to ICD-9-CM 536.8 (stomach function dis NEC). The mapping is a direct match.