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ICD-10/K31.A15

K31.A15 ICD-10-CM Code: Gastric intestinal metaplasia without dysplasia, involving multiple sites

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

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, 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.

Official Registry Overview & Definition

Gastric intestinal metaplasia without dysplasia, involving multiple sites is a billable ICD-10-CM diagnosis code (K31.A15).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for K31.A15 in the official ICD-10-CM tabular list.

Includes

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

  • functional disorders of stomach

Excludes2 — Not Included Here

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

Change history

  • FY2022 — 2021-10-01
    Added to the code set
    Gastric intestinal metaplasia without dysplasia, involving multiple sites
    FY2022 changes

Verify Before Coding

  • Billable — reportable as written.

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

Contextual Map

Every relationship of K31.A15 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.

Hierarchy

  • K31.A1 — Gastric intestinal metaplasia without dysplasia [Hierarchy]

Referenced by Excludes2 notes

  • K59 — Other functional intestinal disorders [Excludes2](via K31.-): “functional disorders of stomach (K31.-)”

Clinical classification (CCSR)

  • DIG008 — Other specified and unspecified disorders of stomach and duodenum [CCSR]

Potential MS-DRG

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

Index entries

  • Metaplasia, gastric intesti… — Metaplasia, gastric intestinal, without dysplasia, involving, multiple sites [Index term]

Nearest codes (31)

  • K31 — Other diseases of stomach and duodenum [Sibling]
  • K31.0 — Acute dilatation of stomach [Sibling]
  • K31.1 — Adult hypertrophic pyloric stenosis [Sibling]
  • K31.2 — Hourglass stricture and stenosis of stomach [Sibling]
  • K31.3 — Pylorospasm, not elsewhere classified [Sibling]
  • K31.4 — Gastric diverticulum [Sibling]
  • K31.5 — Obstruction of duodenum [Sibling]
  • K31.6 — Fistula of stomach and duodenum [Sibling]
  • and 23 more

Change history

  • FY2022 — Added to the code set [Change history]

Referenced by Other Codes

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.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

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.

Official ICD-10-CM tabular notes on other codes that name K31.A15 or its code family.

1 Excludes2 notes: K59 (via K31.-).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K31.A15 in its code family, with their registry titles.

  • K31.A1 — Gastric intestinal metaplasia without dysplasia
  • 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.A19 — Gastric intestinal metaplasia without dysplasia, unspecified site
  • K31.A2 — Gastric intestinal metaplasia with dysplasia
  • K31.A21 — Gastric intestinal metaplasia with low grade dysplasia
  • K31.A22 — Gastric intestinal metaplasia with high grade dysplasia
  • K31.A29 — Gastric intestinal metaplasia with dysplasia, unspecified

View all codes in the K31 family

Indexed Clinical Terms (1)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Metaplasia, gastric intestinal, without dysplasia, involving, multiple sites