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ICD-10-CM Codes
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M00-M99
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M20-M25
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M21-
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2023 ICD-10-CM Diagnosis Code M21.90
2023 ICD-10-CM Diagnosis Code M21.90
Unspecified acquired deformity of unspecified limb
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- M21.90 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM M21.90 became effective on October 1, 2022.
- This is the American ICD-10-CM version of M21.90 - other international versions of ICD-10 M21.90 may differ.
The following code(s) above
M21.90 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
M21.90:
- M00-M99
2023 ICD-10-CM Range M00-M99
Diseases of the musculoskeletal system and connective tissueNote- 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)
- M20-M25
2023 ICD-10-CM Range M20-M25
Other joint disorders - M21
ICD-10-CM Diagnosis Code M21
Other acquired deformities of limbs
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Type 1 Excludes- acquired absence of limb (Z89.-)
- congenital absence of limbs (Q71-Q73)
- congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)
Type 2 Excludes- acquired deformities of fingers or toes (M20.-)
- coxa plana (M91.2)
- Acquired deformity of limb
- Deformity of limb, acquired
ICD-10-CM M21.90 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 564 Other musculoskeletal system and connective tissue diagnoses with mcc
- 565 Other musculoskeletal system and connective tissue diagnoses with cc
- 566 Other musculoskeletal system and connective tissue diagnoses without cc/mcc
Convert M21.90 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
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Deformity Q89.9
ICD-10-CM Diagnosis Code Q89.9
Congenital malformation, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS
- Congenital deformity NOS
- joint (acquired) M21.90
- limb (acquired) M21.90
ICD-10-CM Codes Adjacent To M21.90
M21.839 Other specified acquired deformities of unspecified forearm
M21.85 Other specified acquired deformities of thigh
M21.851 Other specified acquired deformities of right thigh
M21.852 Other specified acquired deformities of left thigh
M21.859 Other specified acquired deformities of unspecified thigh
M21.86 Other specified acquired deformities of lower leg
M21.861 Other specified acquired deformities of right lower leg
M21.862 Other specified acquired deformities of left lower leg
M21.869 Other specified acquired deformities of unspecified lower leg
M21.9 Unspecified acquired deformity of limb and hand
M21.90
Unspecified acquired deformity of unspecified limb
M21.92 Unspecified acquired deformity of upper arm
M21.921 Unspecified acquired deformity of right upper arm
M21.922 Unspecified acquired deformity of left upper arm
M21.929 Unspecified acquired deformity of unspecified upper arm
M21.93 Unspecified acquired deformity of forearm
M21.931 Unspecified acquired deformity of right forearm
M21.932 Unspecified acquired deformity of left forearm
M21.939 Unspecified acquired deformity of unspecified forearm
M21.94 Unspecified acquired deformity of hand
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
