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  3. Diagnosis Codes in MS-DRG 541 - Osteomyelitis Without CC/MCC

Diagnosis Codes in MS-DRG 541 - Osteomyelitis Without CC/MCC

The Medicare Severity Diagnosis-Related Group (MS-DRG) is a patient classification system used to categorize hospital cases based on clinical similarity and expected resource use. MS-DRGs organize all possible principal diagnoses into mutually exclusive groups known as Major Diagnostic Categories (MDCs), which help determine reimbursement under the Medicare Inpatient Prospective Payment System.

This section lists the diagnosis codes included in MS-DRG V42.0: Osteomyelitis without CC/MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 541

MS-DRG Title: Osteomyelitis without CC/MCC

MCD: 08

Relative Weight: 0.8748 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.

Geometric LOS: 0.87 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.

Arithmetic LOS: 2.90 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.

  1. A02.2 - Localized salmonella infections
  2. A18.0 - Tuberculosis of bones and joints
  3. A51.4 - Other secondary syphilis
  4. A52.7 - Other symptomatic late syphilis
  5. A54.4 - Gonococcal infection of musculoskeletal system
  6. M46.2 - Osteomyelitis of vertebra
  7. M46.3 - Infection of intervertebral disc (pyogenic)
  8. M86 - Osteomyelitis
  9. M86.0 - Acute hematogenous osteomyelitis
  10. M86.01 - Acute hematogenous osteomyelitis, shoulder
  11. M86.02 - Acute hematogenous osteomyelitis, humerus
  12. M86.03 - Acute hematogenous osteomyelitis, radius and ulna
  13. M86.04 - Acute hematogenous osteomyelitis, hand
  14. M86.05 - Acute hematogenous osteomyelitis, femur
  15. M86.06 - Acute hematogenous osteomyelitis, tibia and fibula
  16. M86.07 - Acute hematogenous osteomyelitis, ankle and foot
  17. M86.1 - Other acute osteomyelitis
  18. M86.11 - Other acute osteomyelitis, shoulder
  19. M86.12 - Other acute osteomyelitis, humerus
  20. M86.13 - Other acute osteomyelitis, radius and ulna
  21. M86.14 - Other acute osteomyelitis, hand
  22. M86.15 - Other acute osteomyelitis, femur
  23. M86.16 - Other acute osteomyelitis, tibia and fibula
  24. M86.17 - Other acute osteomyelitis, ankle and foot
  25. M86.2 - Subacute osteomyelitis
  26. M86.21 - Subacute osteomyelitis, shoulder
  27. M86.22 - Subacute osteomyelitis, humerus
  28. M86.23 - Subacute osteomyelitis, radius and ulna
  29. M86.24 - Subacute osteomyelitis, hand
  30. M86.25 - Subacute osteomyelitis, femur
  31. M86.26 - Subacute osteomyelitis, tibia and fibula
  32. M86.27 - Subacute osteomyelitis, ankle and foot
  33. M86.3 - Chronic multifocal osteomyelitis
  34. M86.31 - Chronic multifocal osteomyelitis, shoulder
  35. M86.32 - Chronic multifocal osteomyelitis, humerus
  36. M86.33 - Chronic multifocal osteomyelitis, radius and ulna
  37. M86.34 - Chronic multifocal osteomyelitis, hand
  38. M86.35 - Chronic multifocal osteomyelitis, femur
  39. M86.36 - Chronic multifocal osteomyelitis, tibia and fibula
  40. M86.37 - Chronic multifocal osteomyelitis, ankle and foot
  41. M86.4 - Chronic osteomyelitis with draining sinus
  42. M86.41 - Chronic osteomyelitis with draining sinus, shoulder
  43. M86.42 - Chronic osteomyelitis with draining sinus, humerus
  44. M86.43 - Chronic osteomyelitis with draining sinus, radius a
  45. M86.44 - Chronic osteomyelitis with draining sinus, hand
  46. M86.45 - Chronic osteomyelitis with draining sinus, femur
  47. M86.46 - Chronic osteomyelitis with draining sinus, tibia an
  48. M86.47 - Chronic osteomyelitis with draining sinus, ankle an
  49. M86.5 - Other chronic hematogenous osteomyelitis
  50. M86.51 - Other chronic hematogenous osteomyelitis, shoulder
  51. M86.52 - Other chronic hematogenous osteomyelitis, humerus
  52. M86.53 - Other chronic hematogenous osteomyelitis, radius an
  53. M86.54 - Other chronic hematogenous osteomyelitis, hand
  54. M86.55 - Other chronic hematogenous osteomyelitis, femur
  55. M86.56 - Other chronic hematogenous osteomyelitis, tibia and
  56. M86.57 - Other chronic hematogenous osteomyelitis, ankle and
  57. M86.6 - Other chronic osteomyelitis
  58. M86.61 - Other chronic osteomyelitis, shoulder
  59. M86.62 - Other chronic osteomyelitis, humerus
  60. M86.63 - Other chronic osteomyelitis, radius and ulna
  61. M86.64 - Other chronic osteomyelitis, hand
  62. M86.65 - Other chronic osteomyelitis, thigh
  63. M86.66 - Other chronic osteomyelitis, tibia and fibula
  64. M86.67 - Other chronic osteomyelitis, ankle and foot
  65. M86.8X - Other osteomyelitis

  • A02.2 - Localized salmonella infections

    • A02.24 - Salmonella osteomyelitis

  • A18.0 - Tuberculosis of bones and joints

    • A18.01 - Tuberculosis of spine

    • A18.03 - Tuberculosis of other bones

  • A51.4 - Other secondary syphilis

    • A51.46 - Secondary syphilitic osteopathy

  • A52.7 - Other symptomatic late syphilis

    • A52.77 - Syphilis of bone and joint

  • A54.4 - Gonococcal infection of musculoskeletal system

    • A54.41 - Gonococcal spondylopathy

  • M46.2 - Osteomyelitis of vertebra

    • M46.20 - Osteomyelitis of vertebra, site unspecified

    • M46.21 - Osteomyelitis of vertebra, occipito-atlanto-axial region

    • M46.22 - Osteomyelitis of vertebra, cervical region

    • M46.23 - Osteomyelitis of vertebra, cervicothoracic region

    • M46.24 - Osteomyelitis of vertebra, thoracic region

    • M46.25 - Osteomyelitis of vertebra, thoracolumbar region

    • M46.26 - Osteomyelitis of vertebra, lumbar region

    • M46.27 - Osteomyelitis of vertebra, lumbosacral region

    • M46.28 - Osteomyelitis of vertebra, sacral and sacrococcygeal region

  • M46.3 - Infection of intervertebral disc (pyogenic)

    • M46.30 - Infection of intervertebral disc (pyogenic), site unspecified

    • M46.31 - Infection of intervertebral disc (pyogenic), occipito-atlanto-axial region

    • M46.32 - Infection of intervertebral disc (pyogenic), cervical region

    • M46.33 - Infection of intervertebral disc (pyogenic), cervicothoracic region

    • M46.34 - Infection of intervertebral disc (pyogenic), thoracic region

    • M46.35 - Infection of intervertebral disc (pyogenic), thoracolumbar region

    • M46.36 - Infection of intervertebral disc (pyogenic), lumbar region

    • M46.37 - Infection of intervertebral disc (pyogenic), lumbosacral region

    • M46.38 - Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region

    • M46.39 - Infection of intervertebral disc (pyogenic), multiple sites in spine

  • M86 - Osteomyelitis

    • M86.9 - Osteomyelitis, unspecified

  • M86.0 - Acute hematogenous osteomyelitis

    • M86.00 - Acute hematogenous osteomyelitis, unspecified site

    • M86.08 - Acute hematogenous osteomyelitis, other sites

    • M86.09 - Acute hematogenous osteomyelitis, multiple sites

  • M86.01 - Acute hematogenous osteomyelitis, shoulder

    • M86.011 - Acute hematogenous osteomyelitis, right shoulder

    • M86.012 - Acute hematogenous osteomyelitis, left shoulder

    • M86.019 - Acute hematogenous osteomyelitis, unspecified shoulder

  • M86.02 - Acute hematogenous osteomyelitis, humerus

    • M86.021 - Acute hematogenous osteomyelitis, right humerus

    • M86.022 - Acute hematogenous osteomyelitis, left humerus

    • M86.029 - Acute hematogenous osteomyelitis, unspecified humerus

  • M86.03 - Acute hematogenous osteomyelitis, radius and ulna

    • M86.031 - Acute hematogenous osteomyelitis, right radius and ulna

    • M86.032 - Acute hematogenous osteomyelitis, left radius and ulna

    • M86.039 - Acute hematogenous osteomyelitis, unspecified radius and ulna

  • M86.04 - Acute hematogenous osteomyelitis, hand

    • M86.041 - Acute hematogenous osteomyelitis, right hand

    • M86.042 - Acute hematogenous osteomyelitis, left hand

    • M86.049 - Acute hematogenous osteomyelitis, unspecified hand

  • M86.05 - Acute hematogenous osteomyelitis, femur

    • M86.051 - Acute hematogenous osteomyelitis, right femur

    • M86.052 - Acute hematogenous osteomyelitis, left femur

    • M86.059 - Acute hematogenous osteomyelitis, unspecified femur

  • M86.06 - Acute hematogenous osteomyelitis, tibia and fibula

    • M86.061 - Acute hematogenous osteomyelitis, right tibia and fibula

    • M86.062 - Acute hematogenous osteomyelitis, left tibia and fibula

    • M86.069 - Acute hematogenous osteomyelitis, unspecified tibia and fibula

  • M86.07 - Acute hematogenous osteomyelitis, ankle and foot

    • M86.071 - Acute hematogenous osteomyelitis, right ankle and foot

    • M86.072 - Acute hematogenous osteomyelitis, left ankle and foot

    • M86.079 - Acute hematogenous osteomyelitis, unspecified ankle and foot

  • M86.1 - Other acute osteomyelitis

    • M86.10 - Other acute osteomyelitis, unspecified site

    • M86.18 - Other acute osteomyelitis, other site

    • M86.19 - Other acute osteomyelitis, multiple sites

  • M86.11 - Other acute osteomyelitis, shoulder

    • M86.111 - Other acute osteomyelitis, right shoulder

    • M86.112 - Other acute osteomyelitis, left shoulder

    • M86.119 - Other acute osteomyelitis, unspecified shoulder

  • M86.12 - Other acute osteomyelitis, humerus

    • M86.121 - Other acute osteomyelitis, right humerus

    • M86.122 - Other acute osteomyelitis, left humerus

    • M86.129 - Other acute osteomyelitis, unspecified humerus

  • M86.13 - Other acute osteomyelitis, radius and ulna

    • M86.131 - Other acute osteomyelitis, right radius and ulna

    • M86.132 - Other acute osteomyelitis, left radius and ulna

    • M86.139 - Other acute osteomyelitis, unspecified radius and ulna

  • M86.14 - Other acute osteomyelitis, hand

    • M86.141 - Other acute osteomyelitis, right hand

    • M86.142 - Other acute osteomyelitis, left hand

    • M86.149 - Other acute osteomyelitis, unspecified hand

  • M86.15 - Other acute osteomyelitis, femur

    • M86.151 - Other acute osteomyelitis, right femur

    • M86.152 - Other acute osteomyelitis, left femur

    • M86.159 - Other acute osteomyelitis, unspecified femur

  • M86.16 - Other acute osteomyelitis, tibia and fibula

    • M86.161 - Other acute osteomyelitis, right tibia and fibula

    • M86.162 - Other acute osteomyelitis, left tibia and fibula

    • M86.169 - Other acute osteomyelitis, unspecified tibia and fibula

  • M86.17 - Other acute osteomyelitis, ankle and foot

    • M86.171 - Other acute osteomyelitis, right ankle and foot

    • M86.172 - Other acute osteomyelitis, left ankle and foot

    • M86.179 - Other acute osteomyelitis, unspecified ankle and foot

  • M86.2 - Subacute osteomyelitis

    • M86.20 - Subacute osteomyelitis, unspecified site

    • M86.28 - Subacute osteomyelitis, other site

    • M86.29 - Subacute osteomyelitis, multiple sites

  • M86.21 - Subacute osteomyelitis, shoulder

    • M86.211 - Subacute osteomyelitis, right shoulder

    • M86.212 - Subacute osteomyelitis, left shoulder

    • M86.219 - Subacute osteomyelitis, unspecified shoulder

  • M86.22 - Subacute osteomyelitis, humerus

    • M86.221 - Subacute osteomyelitis, right humerus

    • M86.222 - Subacute osteomyelitis, left humerus

    • M86.229 - Subacute osteomyelitis, unspecified humerus

  • M86.23 - Subacute osteomyelitis, radius and ulna

    • M86.231 - Subacute osteomyelitis, right radius and ulna

    • M86.232 - Subacute osteomyelitis, left radius and ulna

    • M86.239 - Subacute osteomyelitis, unspecified radius and ulna

  • M86.24 - Subacute osteomyelitis, hand

    • M86.241 - Subacute osteomyelitis, right hand

    • M86.242 - Subacute osteomyelitis, left hand

    • M86.249 - Subacute osteomyelitis, unspecified hand

  • M86.25 - Subacute osteomyelitis, femur

    • M86.251 - Subacute osteomyelitis, right femur

    • M86.252 - Subacute osteomyelitis, left femur

    • M86.259 - Subacute osteomyelitis, unspecified femur

  • M86.26 - Subacute osteomyelitis, tibia and fibula

    • M86.261 - Subacute osteomyelitis, right tibia and fibula

    • M86.262 - Subacute osteomyelitis, left tibia and fibula

    • M86.269 - Subacute osteomyelitis, unspecified tibia and fibula

  • M86.27 - Subacute osteomyelitis, ankle and foot

    • M86.271 - Subacute osteomyelitis, right ankle and foot

    • M86.272 - Subacute osteomyelitis, left ankle and foot

    • M86.279 - Subacute osteomyelitis, unspecified ankle and foot

  • M86.3 - Chronic multifocal osteomyelitis

    • M86.30 - Chronic multifocal osteomyelitis, unspecified site

    • M86.38 - Chronic multifocal osteomyelitis, other site

    • M86.39 - Chronic multifocal osteomyelitis, multiple sites

  • M86.31 - Chronic multifocal osteomyelitis, shoulder

    • M86.311 - Chronic multifocal osteomyelitis, right shoulder

    • M86.312 - Chronic multifocal osteomyelitis, left shoulder

    • M86.319 - Chronic multifocal osteomyelitis, unspecified shoulder

  • M86.32 - Chronic multifocal osteomyelitis, humerus

    • M86.321 - Chronic multifocal osteomyelitis, right humerus

    • M86.322 - Chronic multifocal osteomyelitis, left humerus

    • M86.329 - Chronic multifocal osteomyelitis, unspecified humerus

  • M86.33 - Chronic multifocal osteomyelitis, radius and ulna

    • M86.331 - Chronic multifocal osteomyelitis, right radius and ulna

    • M86.332 - Chronic multifocal osteomyelitis, left radius and ulna

    • M86.339 - Chronic multifocal osteomyelitis, unspecified radius and ulna

  • M86.34 - Chronic multifocal osteomyelitis, hand

    • M86.341 - Chronic multifocal osteomyelitis, right hand

    • M86.342 - Chronic multifocal osteomyelitis, left hand

    • M86.349 - Chronic multifocal osteomyelitis, unspecified hand

  • M86.35 - Chronic multifocal osteomyelitis, femur

    • M86.351 - Chronic multifocal osteomyelitis, right femur

    • M86.352 - Chronic multifocal osteomyelitis, left femur

    • M86.359 - Chronic multifocal osteomyelitis, unspecified femur

  • M86.36 - Chronic multifocal osteomyelitis, tibia and fibula

    • M86.361 - Chronic multifocal osteomyelitis, right tibia and fibula

    • M86.362 - Chronic multifocal osteomyelitis, left tibia and fibula

    • M86.369 - Chronic multifocal osteomyelitis, unspecified tibia and fibula

  • M86.37 - Chronic multifocal osteomyelitis, ankle and foot

    • M86.371 - Chronic multifocal osteomyelitis, right ankle and foot

    • M86.372 - Chronic multifocal osteomyelitis, left ankle and foot

    • M86.379 - Chronic multifocal osteomyelitis, unspecified ankle and foot

  • M86.4 - Chronic osteomyelitis with draining sinus

    • M86.40 - Chronic osteomyelitis with draining sinus, unspecified site

    • M86.48 - Chronic osteomyelitis with draining sinus, other site

    • M86.49 - Chronic osteomyelitis with draining sinus, multiple sites

  • M86.41 - Chronic osteomyelitis with draining sinus, shoulder

    • M86.411 - Chronic osteomyelitis with draining sinus, right shoulder

    • M86.412 - Chronic osteomyelitis with draining sinus, left shoulder

    • M86.419 - Chronic osteomyelitis with draining sinus, unspecified shoulder

  • M86.42 - Chronic osteomyelitis with draining sinus, humerus

    • M86.421 - Chronic osteomyelitis with draining sinus, right humerus

    • M86.422 - Chronic osteomyelitis with draining sinus, left humerus

    • M86.429 - Chronic osteomyelitis with draining sinus, unspecified humerus

  • M86.43 - Chronic osteomyelitis with draining sinus, radius and ulna

    • M86.431 - Chronic osteomyelitis with draining sinus, right radius and ulna

    • M86.432 - Chronic osteomyelitis with draining sinus, left radius and ulna

    • M86.439 - Chronic osteomyelitis with draining sinus, unspecified radius and ulna

  • M86.44 - Chronic osteomyelitis with draining sinus, hand

    • M86.441 - Chronic osteomyelitis with draining sinus, right hand

    • M86.442 - Chronic osteomyelitis with draining sinus, left hand

    • M86.449 - Chronic osteomyelitis with draining sinus, unspecified hand

  • M86.45 - Chronic osteomyelitis with draining sinus, femur

    • M86.451 - Chronic osteomyelitis with draining sinus, right femur

    • M86.452 - Chronic osteomyelitis with draining sinus, left femur

    • M86.459 - Chronic osteomyelitis with draining sinus, unspecified femur

  • M86.46 - Chronic osteomyelitis with draining sinus, tibia and fibula

    • M86.461 - Chronic osteomyelitis with draining sinus, right tibia and fibula

    • M86.462 - Chronic osteomyelitis with draining sinus, left tibia and fibula

    • M86.469 - Chronic osteomyelitis with draining sinus, unspecified tibia and fibula

  • M86.47 - Chronic osteomyelitis with draining sinus, ankle and foot

    • M86.471 - Chronic osteomyelitis with draining sinus, right ankle and foot

    • M86.472 - Chronic osteomyelitis with draining sinus, left ankle and foot

    • M86.479 - Chronic osteomyelitis with draining sinus, unspecified ankle and foot

  • M86.5 - Other chronic hematogenous osteomyelitis

    • M86.50 - Other chronic hematogenous osteomyelitis, unspecified site

    • M86.58 - Other chronic hematogenous osteomyelitis, other site

    • M86.59 - Other chronic hematogenous osteomyelitis, multiple sites

  • M86.51 - Other chronic hematogenous osteomyelitis, shoulder

    • M86.511 - Other chronic hematogenous osteomyelitis, right shoulder

    • M86.512 - Other chronic hematogenous osteomyelitis, left shoulder

    • M86.519 - Other chronic hematogenous osteomyelitis, unspecified shoulder

  • M86.52 - Other chronic hematogenous osteomyelitis, humerus

    • M86.521 - Other chronic hematogenous osteomyelitis, right humerus

    • M86.522 - Other chronic hematogenous osteomyelitis, left humerus

    • M86.529 - Other chronic hematogenous osteomyelitis, unspecified humerus

  • M86.53 - Other chronic hematogenous osteomyelitis, radius and ulna

    • M86.531 - Other chronic hematogenous osteomyelitis, right radius and ulna

    • M86.532 - Other chronic hematogenous osteomyelitis, left radius and ulna

    • M86.539 - Other chronic hematogenous osteomyelitis, unspecified radius and ulna

  • M86.54 - Other chronic hematogenous osteomyelitis, hand

    • M86.541 - Other chronic hematogenous osteomyelitis, right hand

    • M86.542 - Other chronic hematogenous osteomyelitis, left hand

    • M86.549 - Other chronic hematogenous osteomyelitis, unspecified hand

  • M86.55 - Other chronic hematogenous osteomyelitis, femur

    • M86.551 - Other chronic hematogenous osteomyelitis, right femur

    • M86.552 - Other chronic hematogenous osteomyelitis, left femur

    • M86.559 - Other chronic hematogenous osteomyelitis, unspecified femur

  • M86.56 - Other chronic hematogenous osteomyelitis, tibia and fibula

    • M86.561 - Other chronic hematogenous osteomyelitis, right tibia and fibula

    • M86.562 - Other chronic hematogenous osteomyelitis, left tibia and fibula

    • M86.569 - Other chronic hematogenous osteomyelitis, unspecified tibia and fibula

  • M86.57 - Other chronic hematogenous osteomyelitis, ankle and foot

    • M86.571 - Other chronic hematogenous osteomyelitis, right ankle and foot

    • M86.572 - Other chronic hematogenous osteomyelitis, left ankle and foot

    • M86.579 - Other chronic hematogenous osteomyelitis, unspecified ankle and foot

  • M86.6 - Other chronic osteomyelitis

    • M86.60 - Other chronic osteomyelitis, unspecified site

    • M86.68 - Other chronic osteomyelitis, other site

    • M86.69 - Other chronic osteomyelitis, multiple sites

  • M86.61 - Other chronic osteomyelitis, shoulder

    • M86.611 - Other chronic osteomyelitis, right shoulder

    • M86.612 - Other chronic osteomyelitis, left shoulder

    • M86.619 - Other chronic osteomyelitis, unspecified shoulder

  • M86.62 - Other chronic osteomyelitis, humerus

    • M86.621 - Other chronic osteomyelitis, right humerus

    • M86.622 - Other chronic osteomyelitis, left humerus

    • M86.629 - Other chronic osteomyelitis, unspecified humerus

  • M86.63 - Other chronic osteomyelitis, radius and ulna

    • M86.631 - Other chronic osteomyelitis, right radius and ulna

    • M86.632 - Other chronic osteomyelitis, left radius and ulna

    • M86.639 - Other chronic osteomyelitis, unspecified radius and ulna

  • M86.64 - Other chronic osteomyelitis, hand

    • M86.641 - Other chronic osteomyelitis, right hand

    • M86.642 - Other chronic osteomyelitis, left hand

    • M86.649 - Other chronic osteomyelitis, unspecified hand

  • M86.65 - Other chronic osteomyelitis, thigh

    • M86.651 - Other chronic osteomyelitis, right thigh

    • M86.652 - Other chronic osteomyelitis, left thigh

    • M86.659 - Other chronic osteomyelitis, unspecified thigh

  • M86.66 - Other chronic osteomyelitis, tibia and fibula

    • M86.661 - Other chronic osteomyelitis, right tibia and fibula

    • M86.662 - Other chronic osteomyelitis, left tibia and fibula

    • M86.669 - Other chronic osteomyelitis, unspecified tibia and fibula

  • M86.67 - Other chronic osteomyelitis, ankle and foot

    • M86.671 - Other chronic osteomyelitis, right ankle and foot

    • M86.672 - Other chronic osteomyelitis, left ankle and foot

    • M86.679 - Other chronic osteomyelitis, unspecified ankle and foot

  • M86.8X - Other osteomyelitis

    • M86.8X0 - Other osteomyelitis, multiple sites

    • M86.8X1 - Other osteomyelitis, shoulder

    • M86.8X2 - Other osteomyelitis, upper arm

    • M86.8X3 - Other osteomyelitis, forearm

    • M86.8X4 - Other osteomyelitis, hand

    • M86.8X5 - Other osteomyelitis, thigh

    • M86.8X6 - Other osteomyelitis, lower leg

    • M86.8X7 - Other osteomyelitis, ankle and foot

    • M86.8X8 - Other osteomyelitis, other site

    • M86.8X9 - Other osteomyelitis, unspecified sites