ICD-10-CM Code M91

Juvenile osteochondrosis of hip and pelvis

Version 2020 Non-Billable Code

Not Valid for Submission

M91 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of juvenile osteochondrosis of hip and pelvis. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:M91
Short Description:Juvenile osteochondrosis of hip and pelvis
Long Description:Juvenile osteochondrosis of hip and pelvis

Consider the following ICD-10 codes with a higher level of specificity:

  • M91.0 - Juvenile osteochondrosis of pelvis
  • M91.1 - Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes]
  • M91.10 - Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], unspecified leg
  • M91.11 - Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], right leg
  • M91.12 - Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], left leg
  • M91.2 - Coxa plana
  • M91.20 - Coxa plana, unspecified hip
  • M91.21 - Coxa plana, right hip
  • M91.22 - Coxa plana, left hip
  • M91.3 - Pseudocoxalgia
  • M91.30 - Pseudocoxalgia, unspecified hip
  • M91.31 - Pseudocoxalgia, right hip
  • M91.32 - Pseudocoxalgia, left hip
  • M91.4 - Coxa magna
  • M91.40 - Coxa magna, unspecified hip
  • M91.41 - Coxa magna, right hip
  • M91.42 - Coxa magna, left hip
  • M91.8 - Other juvenile osteochondrosis of hip and pelvis
  • M91.80 - Other juvenile osteochondrosis of hip and pelvis, unspecified leg
  • M91.81 - Other juvenile osteochondrosis of hip and pelvis, right leg
  • M91.82 - Other juvenile osteochondrosis of hip and pelvis, left leg
  • M91.9 - ... unspecified
  • M91.90 - ... unspecified, unspecified leg
  • M91.91 - ... unspecified, right leg
  • M91.92 - ... unspecified, left leg

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code M91:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • slipped upper femoral epiphysis nontraumatic M93.0

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Chondropathies (M91-M94)
      • Juvenile osteochondrosis of hip and pelvis (M91)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Hip Injuries and Disorders

Your hip is the joint where your femur (thigh bone) meets your pelvis (hip bone). There are two main parts: a ball at the end of the femur, which fits in a socket in the pelvis. Your hip is known as a ball-and-socket joint. This is because you have a ball at the end of your femur, and it fits into a socket in your pelvis. This makes your hips very stable and allows for a wide range of motion. When they are healthy, it takes great force to hurt them. However, playing sports, running, overuse, or falling can sometimes lead to hip injuries such as

  • Strains
  • Bursitis
  • Dislocations
  • Fractures

Certain diseases also lead to hip injuries or problems. Osteoarthritis can cause pain and limited motion. Osteoporosis of the hip causes weak bones that break easily. Both of these are common in older people.

Another problem is hip dysplasia, where the ball at the end of the femur is loose in the hip socket. It can cause hip dislocation. Babies who have hip dysplasia are usually born with it, but sometimes they develop it later.

Treatment for hip disorders may include rest, medicines, physical therapy, or surgery, including hip replacement.


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