Diagnosis Codes in MS-DRG 550 - SEPTIC ARTHRITIS WITHOUT CC/MCC

The Medicare Severity Diagnosis-Related Group or MS-DRG is a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). This is the group for Diagnosis Codes in MS-DRG 550 - SEPTIC ARTHRITIS WITHOUT Complication Comorbidity/Major Complication or Comorbidity diseases in version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG MS-DRG Title MCD Relative Weight Geometric LOS Arithmetic LOS
550 SEPTIC ARTHRITIS WITHOUT CC/MCC 08 0.9208 Relative Weight
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
0.94 Geometric Length of Stay
The geometric mean length of stay (GMLOS) is used by Medicare to calculate the reimbursement for patients whose medical treatment takes a much longer or shorter time than average.
3.10 Arithmetic Length of Stay
The average length of stay (ALOS) reflects the average number of days a patient spends in a hospital for each admission.

List of ICD-10-CM Codes in Diagnostic Related Group


  • A02.2
  • A18.0
    • A18.09 Other musculoskeletal tuberculosis
  • A39.8
    • A39.83 Meningococcal arthritis
    • A39.84 Postmeningococcal arthritis
  • A54.4
    • A54.40 Gonococcal infection of musculoskeletal system, unspecified
    • A54.43 Gonococcal osteomyelitis
    • A54.49 Gonococcal infection of other musculoskeletal tissue
  • A66
    • A66.6 Bone and joint lesions of yaws
  • M00.0
    • M00.00 Staphylococcal arthritis, unspecified joint
    • M00.08 Staphylococcal arthritis, vertebrae
    • M00.09 Staphylococcal polyarthritis
  • M00.01
    • M00.011 Staphylococcal arthritis, right shoulder
    • M00.012 Staphylococcal arthritis, left shoulder
    • M00.019 Staphylococcal arthritis, unspecified shoulder
  • M00.02
    • M00.021 Staphylococcal arthritis, right elbow
    • M00.022 Staphylococcal arthritis, left elbow
    • M00.029 Staphylococcal arthritis, unspecified elbow
  • M00.03
    • M00.031 Staphylococcal arthritis, right wrist
    • M00.032 Staphylococcal arthritis, left wrist
    • M00.039 Staphylococcal arthritis, unspecified wrist
  • M00.04
    • M00.041 Staphylococcal arthritis, right hand
    • M00.042 Staphylococcal arthritis, left hand
    • M00.049 Staphylococcal arthritis, unspecified hand
  • M00.05
    • M00.051 Staphylococcal arthritis, right hip
    • M00.052 Staphylococcal arthritis, left hip
    • M00.059 Staphylococcal arthritis, unspecified hip
  • M00.07
    • M00.071 Staphylococcal arthritis, right ankle and foot
    • M00.072 Staphylococcal arthritis, left ankle and foot
    • M00.079 Staphylococcal arthritis, unspecified ankle and foot
  • M00.1
    • M00.10 Pneumococcal arthritis, unspecified joint
    • M00.18 Pneumococcal arthritis, vertebrae
    • M00.19 Pneumococcal polyarthritis
  • M00.11
    • M00.111 Pneumococcal arthritis, right shoulder
    • M00.112 Pneumococcal arthritis, left shoulder
    • M00.119 Pneumococcal arthritis, unspecified shoulder
  • M00.12
    • M00.121 Pneumococcal arthritis, right elbow
    • M00.122 Pneumococcal arthritis, left elbow
    • M00.129 Pneumococcal arthritis, unspecified elbow
  • M00.13
    • M00.131 Pneumococcal arthritis, right wrist
    • M00.132 Pneumococcal arthritis, left wrist
    • M00.139 Pneumococcal arthritis, unspecified wrist
  • M00.14
    • M00.141 Pneumococcal arthritis, right hand
    • M00.142 Pneumococcal arthritis, left hand
    • M00.149 Pneumococcal arthritis, unspecified hand
  • M00.15
    • M00.151 Pneumococcal arthritis, right hip
    • M00.152 Pneumococcal arthritis, left hip
    • M00.159 Pneumococcal arthritis, unspecified hip
  • M00.17
    • M00.171 Pneumococcal arthritis, right ankle and foot
    • M00.172 Pneumococcal arthritis, left ankle and foot
    • M00.179 Pneumococcal arthritis, unspecified ankle and foot
  • M00.2
    • M00.20 Other streptococcal arthritis, unspecified joint
    • M00.28 Other streptococcal arthritis, vertebrae
    • M00.29 Other streptococcal polyarthritis
  • M00.21
    • M00.211 Other streptococcal arthritis, right shoulder
    • M00.212 Other streptococcal arthritis, left shoulder
    • M00.219 Other streptococcal arthritis, unspecified shoulder
  • M00.22
    • M00.221 Other streptococcal arthritis, right elbow
    • M00.222 Other streptococcal arthritis, left elbow
    • M00.229 Other streptococcal arthritis, unspecified elbow
  • M00.23
    • M00.231 Other streptococcal arthritis, right wrist
    • M00.232 Other streptococcal arthritis, left wrist
    • M00.239 Other streptococcal arthritis, unspecified wrist
  • M00.24
    • M00.241 Other streptococcal arthritis, right hand
    • M00.242 Other streptococcal arthritis, left hand
    • M00.249 Other streptococcal arthritis, unspecified hand
  • M00.25
    • M00.251 Other streptococcal arthritis, right hip
    • M00.252 Other streptococcal arthritis, left hip
    • M00.259 Other streptococcal arthritis, unspecified hip
  • M00.27
    • M00.271 Other streptococcal arthritis, right ankle and foot
    • M00.272 Other streptococcal arthritis, left ankle and foot
    • M00.279 Other streptococcal arthritis, unspecified ankle and foot
  • M00.8
    • M00.80 Arthritis due to other bacteria, unspecified joint
    • M00.88 Arthritis due to other bacteria, vertebrae
    • M00.89 Polyarthritis due to other bacteria
  • M00.81
    • M00.811 Arthritis due to other bacteria, right shoulder
    • M00.812 Arthritis due to other bacteria, left shoulder
    • M00.819 Arthritis due to other bacteria, unspecified shoulder
  • M00.82
    • M00.821 Arthritis due to other bacteria, right elbow
    • M00.822 Arthritis due to other bacteria, left elbow
    • M00.829 Arthritis due to other bacteria, unspecified elbow
  • M00.83
    • M00.831 Arthritis due to other bacteria, right wrist
    • M00.832 Arthritis due to other bacteria, left wrist
    • M00.839 Arthritis due to other bacteria, unspecified wrist
  • M00.84
    • M00.841 Arthritis due to other bacteria, right hand
    • M00.842 Arthritis due to other bacteria, left hand
    • M00.849 Arthritis due to other bacteria, unspecified hand
  • M00.85
    • M00.851 Arthritis due to other bacteria, right hip
    • M00.852 Arthritis due to other bacteria, left hip
    • M00.859 Arthritis due to other bacteria, unspecified hip
  • M00.87
    • M00.871 Arthritis due to other bacteria, right ankle and foot
    • M00.872 Arthritis due to other bacteria, left ankle and foot
    • M00.879 Arthritis due to other bacteria, unspecified ankle and foot
  • M01.X
    • M01.X0 Direct infection of unspecified joint in infectious and parasitic diseases classified elsewhere
    • M01.X8 Direct infection of vertebrae in infectious and parasitic diseases classified elsewhere
    • M01.X9 Direct infection of multiple joints in infectious and parasitic diseases classified elsewhere
  • M01.X1
    • M01.X11 Direct infection of right shoulder in infectious and parasitic diseases classified elsewhere
    • M01.X12 Direct infection of left shoulder in infectious and parasitic diseases classified elsewhere
    • M01.X19 Direct infection of unspecified shoulder in infectious and parasitic diseases classified elsewhere
  • M01.X2
    • M01.X21 Direct infection of right elbow in infectious and parasitic diseases classified elsewhere
    • M01.X22 Direct infection of left elbow in infectious and parasitic diseases classified elsewhere
    • M01.X29 Direct infection of unspecified elbow in infectious and parasitic diseases classified elsewhere
  • M01.X3
    • M01.X31 Direct infection of right wrist in infectious and parasitic diseases classified elsewhere
    • M01.X32 Direct infection of left wrist in infectious and parasitic diseases classified elsewhere
    • M01.X39 Direct infection of unspecified wrist in infectious and parasitic diseases classified elsewhere
  • M01.X4
    • M01.X41 Direct infection of right hand in infectious and parasitic diseases classified elsewhere
    • M01.X42 Direct infection of left hand in infectious and parasitic diseases classified elsewhere
    • M01.X49 Direct infection of unspecified hand in infectious and parasitic diseases classified elsewhere
  • M01.X5
    • M01.X51 Direct infection of right hip in infectious and parasitic diseases classified elsewhere
    • M01.X52 Direct infection of left hip in infectious and parasitic diseases classified elsewhere
    • M01.X59 Direct infection of unspecified hip in infectious and parasitic diseases classified elsewhere
  • M01.X7
    • M01.X71 Direct infection of right ankle and foot in infectious and parasitic diseases classified elsewhere
    • M01.X72 Direct infection of left ankle and foot in infectious and parasitic diseases classified elsewhere
    • M01.X79 Direct infection of unspecified ankle and foot in infectious and parasitic diseases classified elsewhere
  • M02.8
    • M02.80 Other reactive arthropathies, unspecified site
    • M02.88 Other reactive arthropathies, vertebrae
    • M02.89 Other reactive arthropathies, multiple sites
  • M02.81
    • M02.811 Other reactive arthropathies, right shoulder
    • M02.812 Other reactive arthropathies, left shoulder
    • M02.819 Other reactive arthropathies, unspecified shoulder
  • M02.82
    • M02.821 Other reactive arthropathies, right elbow
    • M02.822 Other reactive arthropathies, left elbow
    • M02.829 Other reactive arthropathies, unspecified elbow
  • M02.83
    • M02.831 Other reactive arthropathies, right wrist
    • M02.832 Other reactive arthropathies, left wrist
    • M02.839 Other reactive arthropathies, unspecified wrist
  • M02.84
    • M02.841 Other reactive arthropathies, right hand
    • M02.842 Other reactive arthropathies, left hand
    • M02.849 Other reactive arthropathies, unspecified hand
  • M02.85
    • M02.851 Other reactive arthropathies, right hip
    • M02.852 Other reactive arthropathies, left hip
    • M02.859 Other reactive arthropathies, unspecified hip
  • M02.86
    • M02.861 Other reactive arthropathies, right knee
    • M02.862 Other reactive arthropathies, left knee
    • M02.869 Other reactive arthropathies, unspecified knee
  • M02.87
    • M02.871 Other reactive arthropathies, right ankle and foot
    • M02.872 Other reactive arthropathies, left ankle and foot
    • M02.879 Other reactive arthropathies, unspecified ankle and foot