MS-DRG 843Medical

Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with MCC

Major Diagnostic Category 17·Grouped by diagnosis·FY 2027

MS-DRG 843 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 17 (MDC 17) with a Major Complication or Comorbidity (MCC). It maps to 106 ICD-10-CM diagnosis codes. For FY 2027 it carries a relative weight of 1.9453 with a geometric mean length of stay of 5.3 days and an arithmetic mean of 7.3 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

FY 2027 payment data

From Table 5 of the FY 2027 IPPS Final Rule (CMS).

Relative weight:: 1.9453 (payment multiplier vs. the average case (1.0))
Geometric mean stay:: 5.3 days (used for transfer payments)
Average stay:: 7.3 days (arithmetic mean)
Post-acute transfer policy:: No (not subject to it)

Same condition, other severity levels

CMS splits one condition into separate DRGs by how sick the patient is. With MCC pays more than with CC, which pays more than without CC/MCC.

DRG	Title	Relative weight	Mean stay
843	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with MCC (this page)	1.9453	5.3 days
844	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with CC	1.2551	3.7 days
845	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses without CC/MCC	0.8447	2.3 days

Diagnosis codes (106)

As the principal diagnosis, these ICD-10-CM codes can group to DRG 843. 100% of the codes listed are billable.