2020 ICD-10-CM Diagnosis Code M86.171

Other acute osteomyelitis, right ankle and foot

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M86.171 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M86.171 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M86.171 - other international versions of ICD-10 M86.171 may differ.
The following code(s) above M86.171 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M86.171:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
  • M86-M90
    2020 ICD-10-CM Range M86-M90

    Other osteopathies

    Type 1 Excludes
    • postprocedural osteopathies (M96.-)
    Other osteopathies
  • M86
    ICD-10-CM Diagnosis Code M86


      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Type 2 Excludes
    Use Additional
    • code (B95-B97) to identify infectious agent
Approximate Synonyms
  • Acute osteomyelitis of bilateral ankles
  • Acute osteomyelitis of bilateral feet
  • Acute osteomyelitis of right foot
ICD-10-CM M86.171 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 539 Osteomyelitis with mcc
  • 540 Osteomyelitis with cc
  • 541 Osteomyelitis without cc/mcc

Convert M86.171 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To M86.171
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 site
M86.19 …… multiple sites
M86.2 Subacute osteomyelitis
M86.20 …… 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

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.