Skip to main content

K31.84 ICD-10-CM Code: Gastroparesis

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
2 inclusion terms · 3 Excludes2 · 4 code-first instructions

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 391 — ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITH MCC (MDC 06)
  • MS-DRG 392 — ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITHOUT MCC (MDC 06)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for K31.84 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on K31.84 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • functional disorders of stomach

Source: inherited from K31

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Gastroparalysis

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Code First

Underlying conditions that must be sequenced before this code.

Coder workflow for K31.84

MedCoder structured workflow — derived from this code’s own official record

Choose the right path

  1. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then K31.84.
    No → Continue; do not add an underlying condition the record does not document.

    ReviewF50.0, E08.43, E09.43, E10.43, E11.43, E13.43

Consider K31.84. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
The underlying (etiologic) condition
Named in the Code First note; sequenced before this code when documented (Guidelines I.A.13).

Official instructions as workflow

  • Excludes2 — not part of K31.84(3 notes)

    Coding workflow: The conditions named in this note are not included in K31.84. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareE08.43, E09.43, E10.43, E11.43, E13.43, K44

    See the official tabular notes · Guidelines I.A.12.b

  • Code First — sequencing check(4 notes)

    Coding workflow: Check whether the underlying or etiologic condition the note names is documented. When it is, sequence it before K31.84. Do not add an underlying condition the record does not document.

    ReviewF50.0, E08.43, E09.43, E10.43, E11.43, E13.43

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: The underlying condition the Code First note names is documented alongside this condition.

Coding question: How are the two sequenced?

Path: Review the Code First note.

Reason: The underlying condition is sequenced first and the manifestation follows (Guidelines I.A.13).

ReviewF50.0, E08.43, E09.43, E10.43, E11.43, E13.43

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Gastroparesis is a billable ICD-10-CM diagnosis code (K31.84).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (3)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Official Coding Guidelines

No excerpt in the ICD-10-CM Official Guidelines names this code specifically. Its chapter carries only this chapter-wide note:

Chapter 11: Diseases of the Digestive System (K00-K95)

Reserved for future guideline expansion

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name K31.84 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Excludes2 note: K59 — Other functional intestinal disorders (via K31.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 2 MS-DRGs: DRG 391 (MDC 06), DRG 392 (MDC 06).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):DIG008 — Other specified and unspecified disorders of stomach and duodenum (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Other specified and unspecified disorders of stomach and duodenum).

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, K31.819 — Angiodysplasia of stomach and duodenum without bleeding, K31.82 — Dieulafoy lesion (hemorrhagic) of stomach and duodenum, K31.83 — Achlorhydria, K31.89 — Other diseases of stomach and duodenum, K31.9 — Disease of stomach and duodenum, unspecified, K31.A0 — Gastric intestinal metaplasia, unspecified, K31.A11 — Gastric intestinal metaplasia without dysplasia, involving the antrum, K31.A12 — Gastric intestinal metaplasia without dysplasia, involving the body (corpus), K31.A13 — Gastric intestinal metaplasia without dysplasia, involving the fundus, K31.A14 — Gastric intestinal metaplasia without dysplasia, involving the cardia, K31.A15 — Gastric intestinal metaplasia without dysplasia, involving multiple sites, K31.A19 — Gastric intestinal metaplasia without dysplasia, unspecified site, K31.A21 — Gastric intestinal metaplasia with low grade dysplasia, +4 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Paralysis, paralytic”; these codes share that main term but sit in a different category of the Tabular List.

J38.01 — Paralysis of vocal cords and larynx, unilateral (larynx, unilateral), J38.02 — Paralysis of vocal cords and larynx, bilateral (larynx, bilateral), J39.2 — Other diseases of pharynx (fauces), J98.09 — Other diseases of bronchus, not elsewhere classified (bronchial), J98.4 — Other disorders of lung (lung), J98.6 — Disorders of diaphragm (diaphragm), K13.0 — Diseases of lips (lip), K13.79 — Other lesions of oral mucosa (uvula), K14.8 — Other diseases of tongue (tongue), K22.89 — Other specified disease of esophagus (esophagus), K56.0 — Paralytic ileus (colon), K59.89 — Other specified functional intestinal disorders (digestive organs NEC), K62.89 — Other specified diseases of anus and rectum (anus), N18.9 — Chronic kidney disease, unspecified (uremic), N31.2 — Flaccid neuropathic bladder, not elsewhere classified (bladder), P11.3 — Birth injury to facial nerve (Bell's, newborn), P11.5 — Birth injury to spine and spinal cord (birth injury, spinal cord), P14.0 — Erb's paralysis due to birth injury (Erb), P14.1 — Klumpke's paralysis due to birth injury (Klumpke), P14.2 — Phrenic nerve paralysis due to birth injury (nerve, phrenic), +84 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Iron Panel

Contextual Map

Every relationship of K31.84 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run K31.84 with these 8 related codes in Claim Check

Hierarchy

Code First

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 06 — Diseases and Disorders of the Digestive System[MDC crossing]: “Diseases and Disorders of the Digestive System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 5,744 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Gastroparalysis[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Gastroparesis[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Paralysis, paralytic (complete) (incomplete), stomach[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (31)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "K31.84 — Gastroparesis." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/k31.84-gastroparesis

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Gastroparesis

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K31.84 in its code family, with their registry titles.

View all codes in the K31 family