MS-DRG 858: POSTOPERATIVE OR POST-TRAUMATIC INFECTIONS WITH O.R. PROCEDURES WITHOUT CC/MCC
MS-DRG 858 is postoperative or post-traumatic infections with o.r. procedures without cc/mcc, in MDC 18 (a surgical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 1.4036, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 3.30 days. 11 ICD-10-CM principal diagnoses group into MS-DRGs 856–858 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 1.4036
- Geometric mean LOS
- 3.30
- Arithmetic mean LOS
- 4.10
- Post-acute transfer
- Yes
This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.
Principal diagnoses that group to MS-DRGs 856–858
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 11 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 856–858 the case lands in. The 11 most-searched:
- T81.49XAInfection following a procedure, other surgical site, initial encounter
- T81.41XAInfection following a procedure, superficial incisional surgical site, initial encounter
- T81.42XAInfection following a procedure, deep incisional surgical site, initial encounter
- T81.43XAInfection following a procedure, organ and space surgical site, initial encounter
- T81.40XAInfection following a procedure, unspecified, initial encounter
- K68.11Postprocedural retroperitoneal abscess
- T81.44XASepsis following a procedure, initial encounter
- N98.0Infection associated with artificial insemination
- T80.22XAAcute infection following transfusion, infusion, or injection of blood and blood products, initial encounter
- T80.29XAInfection following other infusion, transfusion and therapeutic injection, initial encounter
- T88.0XXAInfection following immunization, initial encounter
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 858.
| 856 | POSTOPERATIVE OR POST-TRAUMATIC INFECTIONS WITH O.R. PROCEDURES WITH MCC | 4.4826 | +3.0790 |
| 857 | POSTOPERATIVE OR POST-TRAUMATIC INFECTIONS WITH O.R. PROCEDURES WITH CC | 2.1678 | +0.7642 |
| 858 | POSTOPERATIVE OR POST-TRAUMATIC INFECTIONS WITH O.R. PROCEDURES WITHOUT CC/MCC | 1.4036 |
All FY2027 MS-DRGs · MDC 18