MS-DRG 594: SKIN ULCERS WITHOUT CC/MCC
MS-DRG 594 is skin ulcers without cc/mcc, in MDC 09 (a medical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 0.7801, so a case here pays less than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 3.20 days. 479 ICD-10-CM principal diagnoses group into MS-DRGs 592–594 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 0.7801
- Geometric mean LOS
- 3.20
- Arithmetic mean LOS
- 4.00
- Post-acute transfer
- Yes
CMS caps year-over-year weight decreases at 10%. Before the cap this DRG weighs 0.7353; the capped weight above is the one used for payment. 41 DRGs differ this way in FY2027.
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 592–594
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 479 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 592–594 the case lands in. The 24 most-searched:
- L97.512Non-pressure chronic ulcer of other part of right foot with fat layer exposed
- L89.154Pressure ulcer of sacral region, stage 4
- L97.522Non-pressure chronic ulcer of other part of left foot with fat layer exposed
- L89.153Pressure ulcer of sacral region, stage 3
- L97.511Non-pressure chronic ulcer of other part of right foot limited to breakdown of skin
- L97.519Non-pressure chronic ulcer of other part of right foot with unspecified severity
- L97.521Non-pressure chronic ulcer of other part of left foot limited to breakdown of skin
- L97.529Non-pressure chronic ulcer of other part of left foot with unspecified severity
- L89.152Pressure ulcer of sacral region, stage 2
- L97.812Non-pressure chronic ulcer of other part of right lower leg with fat layer exposed
- L97.822Non-pressure chronic ulcer of other part of left lower leg with fat layer exposed
- L98.499Non-pressure chronic ulcer of skin of other sites with unspecified severity
- L89.150Pressure ulcer of sacral region, unstageable
- L89.159Pressure ulcer of sacral region, unspecified stage
- L89.893Pressure ulcer of other site, stage 3
- L89.90Pressure ulcer of unspecified site, unspecified stage
- L97.412Non-pressure chronic ulcer of right heel and midfoot with fat layer exposed
- L97.509Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity
- L97.909Non-pressure chronic ulcer of unspecified part of unspecified lower leg with unspecified severity
- L97.919Non-pressure chronic ulcer of unspecified part of right lower leg with unspecified severity
- L97.929Non-pressure chronic ulcer of unspecified part of left lower leg with unspecified severity
- L89.312Pressure ulcer of right buttock, stage 2
- L89.313Pressure ulcer of right buttock, stage 3
- L89.322Pressure ulcer of left buttock, stage 2
455 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.
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 594.
| 592 | SKIN ULCERS WITH MCC | 1.9101 | +1.1300 |
| 593 | SKIN ULCERS WITH CC | 1.1575 | +0.3774 |
| 594 | SKIN ULCERS WITHOUT CC/MCC | 0.7801 |
All FY2027 MS-DRGs · MDC 09