ICD-10-CM Code M21.16
Varus deformity, not elsewhere classified, knee
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.ICD Code M21.16 is a non-billable code. To code a diagnosis of this type, you must use one of the three child codes of M21.16 that describes the diagnosis 'varus deformity, not elsewhere classified, knee' in more detail.
The ICD code M211 is used to code Coxa vara
Coxa vara is a deformity of the hip, whereby the angle between the head and the shaft of the femur is reduced to less than 120 degrees. This results in the leg being shortened, and the development of a limp. It is commonly caused by injury, such as a fracture. It can also occur when the bone tissue in the neck of the femur is softer than normal, causing it to bend under the weight of the body. This may either be congenital or the result of a bone disorder. The most common cause of coxa vara is either congenital or developmental. Other common causes include metabolic bone diseases (e.g. Paget's disease of bone), post Perthes deformity, osteomyelitis, and post traumatic (due to improper healing of a fracture between the greater and lesser trochanter). Shepherd's Crook deformity is a severe form of coxa vara where the proximal femur is severely deformed with a reduction in the neck shaft angle beyond 90 degrees. It is most commonly a sequela of osteogenesis imperfecta, Pagets disease, osteomyelitis, tumour and tumour-like conditions (e.g. fibrous dysplasia).
| Specialty: | Medical Genetics |
| MeSH Codes: | D060905, D060905 |
| ICD 9 Codes: | 736.32, 755.62 |
Different femoral abnormalities.
Coding Notes for M21.16 Info for medical coders on how to properly use this ICD-10 code
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Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive. - Bow leg
- Genu varum
Related Concepts SNOMET-CT
- Acquired genu varum (disorder)
- Acquired genu valgum and varum (disorder)
ICD-10-CM Alphabetical Index References for 'M21.16 - Varus deformity, not elsewhere classified, knee'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code M21.16. Click on any term below to browse the alphabetical index.
Parent Code: M21.1 - Varus deformity, not elsewhere classified