MS-DRG · FY 2026 v43.0

MS-DRG 312 – Syncope and Collapse

A Medical DRG in MDC 05 (Diseases & Disorders of the Circulatory System). Inpatient cases group to DRG 312 when the ICD-10-CM principal diagnosis is one of the 5 codes listed below. Its FY 2026 relative weight is 0.8716 with a geometric mean length of stay of 2.4 days.

Medical DRG – assigned by principal diagnosis✓ Official CMS v43.0 dataset
0.8716
Relative Weight
2.4
Geometric Mean LOS (days)
3.1
Arithmetic Mean LOS (days)
5
Principal Diagnosis Codes
How a case is assigned to DRG 312

The grouper first assigns the case to MDC 05 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here).

ICD-10-CM

Principal Diagnosis Codes 5 codes · 2 categories

I95 Hypotension4 codes
  • I95.1 Orthostatic hypotension
  • I95.2 Hypotension due to drugs
  • I95.3 Hypotension of hemodialysis
  • I95.81 Postprocedural hypotension
R55 Syncope and collapse1 code
  • R55 Syncope and collapse
ICD-10-PCS

Procedure Codes

Procedure codes do not drive assignment for this DRG. DRG 312 is a Medical DRG, assigned from the principal diagnosis above.

Frequently Asked Questions

What is MS-DRG 312?

MS-DRG 312 (Syncope and Collapse) is a medical DRG in MDC 05 (Diseases & Disorders of the Circulatory System). Its FY 2026 relative weight is 0.8716 with a geometric mean length of stay of 2.4 days.

How many diagnosis codes group to DRG 312?

5 ICD-10-CM principal diagnosis codes group to this DRG, spanning 2 three-character categories.

What is the relative weight of DRG 312?

The FY 2026 relative weight of this DRG is 0.8716, meaning reimbursement of roughly 0.87 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 311 – Angina Pectoris
Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.