M66.21
Spontaneous rupture of extensor tendons, shoulder
Details
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M66.21 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
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The 2023 edition of ICD-10-CM M66.21 became effective on October 1, 2022.
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This is the American ICD-10-CM version of M66.21 – other international versions of ICD-10 M66.21 may differ.