Muscle strain unspecified icd 10 July 8, 2019 16 32 64 128 Muscle strain unspecified icd 10 code Muscle strain unspecified site icd 10 Icd 10 code for muscle strain unspecified site Strain of trapezius muscle unspecified laterality icd 10 Muscle strain upper back icd 10 Muscle strain icd 10 Muscle sprain icd 10 Muscle strain lower back icd 10