MS-DRG · FY 2026 v43.0

MS-DRG 537 – Sprains, Strains, and Dislocations of Hip, Pelvis and Thigh with CC/MCC

A Medical DRG in MDC 08 (Diseases & Disorders of the Musculoskeletal System & Connective Tissue). Inpatient cases group to DRG 537 when the ICD-10-CM principal diagnosis is one of the 61 codes listed below and a secondary diagnosis on the CC or MCC lists is present. Its FY 2026 relative weight is 0.9543 with a geometric mean length of stay of 3.3 days.

Medical DRG – assigned by principal diagnosis✓ Official CMS v43.0 dataset
0.9543
Relative Weight
3.3
Geometric Mean LOS (days)
4.1
Arithmetic Mean LOS (days)
61
Principal Diagnosis Codes

Severity family

DRG 537with CC/MCCWeight 0.9543 · GMLOS 3.3 daysDRG 538without CC/MCCWeight 0.7203 · GMLOS 2.4 days
How a case is assigned to DRG 537

The grouper first assigns the case to MDC 08 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), then applies the severity split from secondary diagnoses: with CC/MCC → 537; without CC/MCC → 538.

ICD-10-CM

Principal Diagnosis Codes 61 codes · 3 categories

61 of 61 shown
S33 Dislocation and sprain of joints and ligaments of lumbar spine and pelvis1 code
  • S33.4XXA Traumatic rupture of symphysis pubis, initial encounter
S73 Dislocation and sprain of joint and ligaments of hip42 codes
  • S73.001A Unspecified subluxation of right hip, initial encounter
  • S73.002A Unspecified subluxation of left hip, initial encounter
  • S73.003A Unspecified subluxation of unspecified hip, initial encounter
  • S73.004A Unspecified dislocation of right hip, initial encounter
  • S73.005A Unspecified dislocation of left hip, initial encounter
  • S73.006A Unspecified dislocation of unspecified hip, initial encounter
  • S73.011A Posterior subluxation of right hip, initial encounter
  • S73.012A Posterior subluxation of left hip, initial encounter
  • S73.013A Posterior subluxation of unspecified hip, initial encounter
  • S73.014A Posterior dislocation of right hip, initial encounter
  • S73.015A Posterior dislocation of left hip, initial encounter
  • S73.016A Posterior dislocation of unspecified hip, initial encounter
  • S73.021A Obturator subluxation of right hip, initial encounter
  • S73.022A Obturator subluxation of left hip, initial encounter
  • S73.023A Obturator subluxation of unspecified hip, initial encounter
  • S73.024A Obturator dislocation of right hip, initial encounter
  • S73.025A Obturator dislocation of left hip, initial encounter
  • S73.026A Obturator dislocation of unspecified hip, initial encounter
  • S73.031A Other anterior subluxation of right hip, initial encounter
  • S73.032A Other anterior subluxation of left hip, initial encounter
  • S73.033A Other anterior subluxation of unspecified hip, initial encounter
  • S73.034A Other anterior dislocation of right hip, initial encounter
  • S73.035A Other anterior dislocation of left hip, initial encounter
  • S73.036A Other anterior dislocation of unspecified hip, initial encounter
  • S73.041A Central subluxation of right hip, initial encounter
  • S73.042A Central subluxation of left hip, initial encounter
  • S73.043A Central subluxation of unspecified hip, initial encounter
  • S73.044A Central dislocation of right hip, initial encounter
  • S73.045A Central dislocation of left hip, initial encounter
  • S73.046A Central dislocation of unspecified hip, initial encounter
  • S73.101A Unspecified sprain of right hip, initial encounter
  • S73.102A Unspecified sprain of left hip, initial encounter
  • S73.109A Unspecified sprain of unspecified hip, initial encounter
  • S73.111A Iliofemoral ligament sprain of right hip, initial encounter
  • S73.112A Iliofemoral ligament sprain of left hip, initial encounter
  • S73.119A Iliofemoral ligament sprain of unspecified hip, initial encounter
  • S73.121A Ischiocapsular ligament sprain of right hip, initial encounter
  • S73.122A Ischiocapsular ligament sprain of left hip, initial encounter
  • S73.129A Ischiocapsular ligament sprain of unspecified hip, initial encounter
  • S73.191A Other sprain of right hip, initial encounter
  • S73.192A Other sprain of left hip, initial encounter
  • S73.199A Other sprain of unspecified hip, initial encounter
S76 Injury of muscle, fascia and tendon at hip and thigh level18 codes
  • S76.011A Strain of muscle, fascia and tendon of right hip, initial encounter
  • S76.012A Strain of muscle, fascia and tendon of left hip, initial encounter
  • S76.019A Strain of muscle, fascia and tendon of unspecified hip, initial encounter
  • S76.111A Strain of right quadriceps muscle, fascia and tendon, initial encounter
  • S76.112A Strain of left quadriceps muscle, fascia and tendon, initial encounter
  • S76.119A Strain of unspecified quadriceps muscle, fascia and tendon, initial encounter
  • S76.211A Strain of adductor muscle, fascia and tendon of right thigh, initial encounter
  • S76.212A Strain of adductor muscle, fascia and tendon of left thigh, initial encounter
  • S76.219A Strain of adductor muscle, fascia and tendon of unspecified thigh, initial encounter
  • S76.311A Strain of muscle, fascia and tendon of the posterior muscle group at thigh level, right thigh, initial encounter
  • S76.312A Strain of muscle, fascia and tendon of the posterior muscle group at thigh level, left thigh, initial encounter
  • S76.319A Strain of muscle, fascia and tendon of the posterior muscle group at thigh level, unspecified thigh, initial encounter
  • S76.811A Strain of other specified muscles, fascia and tendons at thigh level, right thigh, initial encounter
  • S76.812A Strain of other specified muscles, fascia and tendons at thigh level, left thigh, initial encounter
  • S76.819A Strain of other specified muscles, fascia and tendons at thigh level, unspecified thigh, initial encounter
  • S76.911A Strain of unspecified muscles, fascia and tendons at thigh level, right thigh, initial encounter
  • S76.912A Strain of unspecified muscles, fascia and tendons at thigh level, left thigh, initial encounter
  • S76.919A Strain of unspecified muscles, fascia and tendons at thigh level, unspecified thigh, initial encounter
ICD-10-PCS

Procedure Codes

Procedure codes do not drive assignment for this DRG. DRG 537 is a Medical DRG, assigned from the principal diagnosis above.

Frequently Asked Questions

What is MS-DRG 537?

MS-DRG 537 (Sprains, Strains, and Dislocations of Hip, Pelvis and Thigh with CC/MCC) is a medical DRG in MDC 08 (Diseases & Disorders of the Musculoskeletal System & Connective Tissue). Its FY 2026 relative weight is 0.9543 with a geometric mean length of stay of 3.3 days.

What is the difference between DRG 537, 538?

All 2 share the same base category; the severity of secondary diagnoses separates them: 537 (with CC/MCC), 538 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.

How many diagnosis codes group to DRG 537?

61 ICD-10-CM principal diagnosis codes group to this DRG, spanning 3 three-character categories.

What is the relative weight of DRG 537?

The FY 2026 relative weight of this DRG is 0.9543, meaning reimbursement of roughly 0.95 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 536 – Fractures of Hip and Pelvis without MCC
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.