2020 ICD-10-CM Diagnosis Code M91

Juvenile osteochondrosis of hip and pelvis

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • M91 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM M91 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M91 - other international versions of ICD-10 M91 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as M91. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • slipped upper femoral epiphysis (nontraumatic) (
    ICD-10-CM Diagnosis Code M93.0

    Slipped upper femoral epiphysis (nontraumatic)

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code for associated chondrolysis (M94.3)
    M93.0
    )
The following code(s) above M91 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 M91:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • 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
  • M91-M94
    2020 ICD-10-CM Range M91-M94

    Chondropathies

    Type 1 Excludes
    • postprocedural chondropathies (M96.-)
    Chondropathies
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 M91
M90.86 Osteopathy in diseases classified elsewhere, lower leg
M90.861 Osteopathy in diseases classified elsewhere, right lower leg
M90.862 Osteopathy in diseases classified elsewhere, left lower leg
M90.869 Osteopathy in diseases classified elsewhere, unspecified lower leg
M90.87 Osteopathy in diseases classified elsewhere, ankle and foot
M90.871 Osteopathy in diseases classified elsewhere, right ankle and foot
M90.872 Osteopathy in diseases classified elsewhere, left ankle and foot
M90.879 Osteopathy in diseases classified elsewhere, unspecified ankle and foot
M90.88 …… other site
M90.89 …… multiple sites
M91 Juvenile osteochondrosis of hip and pelvis
M91.0 Juvenile osteochondrosis of pelvis
M91.1 Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes]
M91.10 …… unspecified leg
M91.11 …… right leg
M91.12 …… left leg
M91.2 Coxa plana
M91.20 …… unspecified hip
M91.21 …… right hip
M91.22 …… left hip
M91.3 Pseudocoxalgia

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