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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 M21.942
2023 ICD-10-CM Diagnosis Code M21.942
Unspecified acquired deformity of hand, left hand
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- M21.942 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 M21.942 became effective on October 1, 2022.
- This is the American ICD-10-CM version of M21.942 - other international versions of ICD-10 M21.942 may differ.
The following code(s) above
M21.942 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
M21.942:
- 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 bilateral hands
- Acquired deformity of left hand
- Deformity of bilateral hands due to rheumatoid arthritis
- Deformity of left hand due to rheumatoid arthritis
- Rheumatoid deformity of bilateral hands
- Rheumatoid deformity of left hand
ICD-10-CM M21.942 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 M21.942 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
ICD-10-CM Codes Adjacent To M21.942
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
M21.942
…… left hand
M21.95 Unspecified acquired deformity of thigh
M21.951 Unspecified acquired deformity of right thigh
M21.952 Unspecified acquired deformity of left thigh
M21.959 Unspecified acquired deformity of unspecified thigh
M21.96 Unspecified acquired deformity of lower leg
M21.961 Unspecified acquired deformity of right lower leg
M21.962 Unspecified acquired deformity of left lower leg
M21.969 Unspecified acquired deformity of unspecified lower leg
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
