Skip to main content
ICD-10/K52.839

K52.839 ICD-10-CM Code: Microscopic colitis, unspecified

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

Microscopic colitis, unspecified is a billable ICD-10-CM diagnosis code (K52.839).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for K52.839 in the official ICD-10-CM tabular list.

Includes

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

  • noninfective inflammatory bowel disease

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Change history

  • FY2017 — 2016-10-01
    Added to the code set
    Microscopic colitis, unspecified
    FY2017 changes

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.

Contextual Map

Every relationship of K52.839 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]
  • K50-K52 — Noninfective enteritis and colitis [Hierarchy]

Clinical classification (CCSR)

  • DIG022 — Noninfectious gastroenteritis [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)”

MDC crossing · procedures (5744)

  • 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.”
  • 008Q0ZZ — Division of Vagus Nerve, Open Approach [Same-MDC procedure]: “Division of Vagus Nerve, Open Approach — grouped in MDC 06, the procedure side of this code's crossing.” · check together
  • 008Q3ZZ — Division of Vagus Nerve, Percutaneous Approach [Same-MDC procedure]: “Division of Vagus Nerve, Percutaneous Approach — grouped in MDC 06, the procedure side of this code's crossing.” · check together
  • 008Q4ZZ — Division of Vagus Nerve, Percutaneous Endoscopic Approach [Same-MDC procedure]: “Division of Vagus Nerve, Percutaneous Endoscopic Approach — grouped in MDC 06, the procedure side of this code's crossing.” · check together
  • 02BP3ZZ — Excision of Pulmonary Trunk, Percutaneous Approach [Same-MDC procedure]: “Excision of Pulmonary Trunk, Percutaneous Approach — grouped in MDC 06, the procedure side of this code's crossing.” · check together
  • 02BQ3ZZ — Excision of Right Pulmonary Artery, Percutaneous Approach [Same-MDC procedure]: “Excision of Right Pulmonary Artery, Percutaneous Approach — grouped in MDC 06, the procedure side of this code's crossing.” · check together
  • and 5739 more

Index entries

  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic), microscopic[Index term]

Nearest codes (17)

  • K52 — Other and unspecified noninfective gastroenteritis and colitis [Sibling]
  • K52.0 — Gastroenteritis and colitis due to radiation [Sibling]
  • K52.1 — Toxic gastroenteritis and colitis [Sibling]
  • K52.2 — Allergic and dietetic gastroenteritis and colitis [Sibling]
  • K52.21 — Food protein-induced enterocolitis syndrome [Sibling]
  • K52.22 — Food protein-induced enteropathy [Sibling]
  • K52.29 — Other allergic and dietetic gastroenteritis and colitis [Sibling]
  • K52.3 — Indeterminate colitis [Sibling]
  • and 9 more

Change history

  • FY2017 — Added to the code set [Change history]

Relationships & Classification

Clinical classification (AHRQ CCSR):DIG022 — Noninfectious gastroenteritis (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.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K52.839 in its code family, with their registry titles.

  • K52.3 — Indeterminate colitis
  • K52.8 — Other specified noninfective gastroenteritis and colitis
  • K52.81 — Eosinophilic gastritis or gastroenteritis
  • K52.82 — Eosinophilic colitis
  • K52.83 — Microscopic colitis
  • K52.831 — Collagenous colitis
  • K52.832 — Lymphocytic colitis
  • K52.838 — Other microscopic colitis
  • K52.89 — Other specified noninfective gastroenteritis and colitis
  • K52.9 — Noninfective gastroenteritis and colitis, unspecified

View all codes in the K52 family

Indexed Clinical Terms (1)

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

  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic), microscopic