All ICD10 Codes

DRG 858

Surgical DRG

Postoperative or Post-Traumatic Infections with O.R. Procedures without CC/MCC

TypeSurgicalMDC18Dx Codes11

What is MS-DRG 858?

MS-DRG 858 is a Surgical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 18 (MDC 18) without a significant Complication or Comorbidity. It maps to 11 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 1.3929 with a geometric mean length of stay of 3.4 days and an arithmetic mean of 4.2 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Surgical DRG
Procedure-driven grouping
MDC
Major Diagnostic Category 18
Linked Codes
11 diagnosis
Billable Dx
100%
11 of 11 shown

FY 2026 Payment Data

Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).

Relative Weight
1.3929
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
3.4 days
Used for transfer payment calculations
Arithmetic Mean LOS
4.2 days
Average length of stay
Post-Acute Transfer
Yes
Subject to the post-acute care transfer policy

Related MS-DRGs in This Severity Group

The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.

DRGTitleRel. WeightGMLOS
856Postoperative or Post-Traumatic Infections with O.R. Procedures with MCC4.54879.1 days
857Postoperative or Post-Traumatic Infections with O.R. Procedures with CC2.14155.4 days
858Postoperative or Post-Traumatic Infections with O.R. Procedures without CC/MCCThis page1.39293.4 days

Linked ICD-10-CM Diagnosis Mappings

  • K68.11

    Postprocedural retroperitoneal abscess

    BillableChapter 11
  • N98.0

    Infection associated with artificial insemination

    BillableChapter 14
  • T80.22XA

    Acute infection following transfusion, infusion, or injection of blood and blood products, initial encounter

    BillableChapter 19
  • T80.29XA

    Infection following other infusion, transfusion and therapeutic injection, initial encounter

    BillableChapter 19
  • T81.40XA

    Infection following a procedure, unspecified, initial encounter

    BillableChapter 19
  • T81.41XA

    Infection following a procedure, superficial incisional surgical site, initial encounter

    BillableChapter 19
  • T81.42XA

    Infection following a procedure, deep incisional surgical site, initial encounter

    BillableChapter 19
  • T81.43XA

    Infection following a procedure, organ and space surgical site, initial encounter

    BillableChapter 19
  • T81.44XA

    Sepsis following a procedure, initial encounter

    BillableChapter 19
  • T81.49XA

    Infection following a procedure, other surgical site, initial encounter

    BillableChapter 19
  • T88.0XXA

    Infection following immunization, initial encounter

    BillableChapter 19