ICD-10-CM M86: Osteomyelitis

ICD-10-CM Diagnosis Code (2025)

Official Description for M86

Osteomyelitis

Coding Notes & Guidelines for M86

Excludes1: Not Coded Here
  • osteomyelitis due to:
  • echinococcus (B67.2)
  • gonococcus (A54.43)
  • salmonella (A02.24)
Excludes2: Not Included Here
  • ostemyelitis of:
  • orbit (H05.0-)
  • petrous bone (H70.2-)
  • vertebra (M46.2-)
Use Additional Code

code (B95-B97) to identify infectious agent

Use Additional Code

code to identify major osseous defect, if applicable (M89.7-)

Inclusion Terms

Brodie's abscess

Inclusion Terms
  • Infection of bone NOS
  • Periostitis without osteomyelitis

Child Codes (More Specific Codes for M86):

M86.0 - Acute hematogenous osteomyelitis M86.00 - Acute hematogenous osteomyelitis, unspecified site 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 M86.08 - Acute hematogenous osteomyelitis, other sites M86.09 - Acute hematogenous osteomyelitis, multiple sites M86.1 - Other acute osteomyelitis M86.10 - Other acute osteomyelitis, unspecified site 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 M86.18 - Other acute osteomyelitis, other site M86.19 - Other acute osteomyelitis, multiple sites M86.2 - Subacute osteomyelitis M86.20 - Subacute osteomyelitis, unspecified site 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 M86.28 - Subacute osteomyelitis, other site M86.29 - Subacute osteomyelitis, multiple sites M86.3 - Chronic multifocal osteomyelitis M86.30 - Chronic multifocal osteomyelitis, unspecified site 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 M86.38 - Chronic multifocal osteomyelitis, other site M86.39 - Chronic multifocal osteomyelitis, multiple sites M86.4 - Chronic osteomyelitis with draining sinus M86.40 - Chronic osteomyelitis with draining sinus, unspecified site 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 M86.48 - Chronic osteomyelitis with draining sinus, other site M86.49 - Chronic osteomyelitis with draining sinus, multiple sites M86.5 - Other chronic hematogenous osteomyelitis M86.50 - Other chronic hematogenous osteomyelitis, unspecified site 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 M86.58 - Other chronic hematogenous osteomyelitis, other site M86.59 - Other chronic hematogenous osteomyelitis, multiple sites M86.6 - Other chronic osteomyelitis M86.60 - Other chronic osteomyelitis, unspecified site 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 M86.68 - Other chronic osteomyelitis, other site M86.69 - Other chronic osteomyelitis, multiple sites M86.8 - Other osteomyelitis 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 M86.9 - Osteomyelitis, unspecified

About ICD-10-CM Code M86 (Osteomyelitis)

ICD-10-CM code M86 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M86 became effective on October 1, 2024.

This page provides detailed information about M86 - Osteomyelitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Osteomyelitis.