Skip to main content
ICD-10/K31.A1

K31.A1 ICD-10-CM Code: Gastric intestinal metaplasia without dysplasia

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Gastric intestinal metaplasia without dysplasia is a non-billable ICD-10-CM category code (K31.A1). A more specific billable subcode must be selected for claims submission.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for K31.A1 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
    FY2022 changes

Verify Before Coding

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.A1 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

  • K00-K95 — Chapter 11: Diseases of the Digestive System (K00-K95) (K00-K95) [Hierarchy]
  • K20-K31 — Diseases of esophagus, stomach and duodenum [Hierarchy]

Referenced by Excludes2 notes

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

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

Official ICD-10-CM tabular notes on other codes that name K31.A1 or its code family.

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

Frequently Asked Questions (FAQ) & Clinical Guidance

Can K31.A1 be billed directly?

No. K31.A1 (Gastric intestinal metaplasia without dysplasia) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K31.A1 in its code family, with their registry titles.

  • K31.84 — Gastroparesis
  • K31.89 — Other diseases of stomach and duodenum
  • K31.9 — Disease of stomach and duodenum, unspecified
  • K31.A — Gastric intestinal metaplasia
  • 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

View all codes in the K31 family