Unspecified back pain icd 10 code July 8, 2019 16 32 64 128 Low back pain unspecified icd 10 code Lower back pain unspecified icd 10 code Thoracic back pain unspecified icd 10 code Chronic back pain unspecified icd 10 code Icd 10 code for unspecified back pain laterality Unspecified back pain icd 10 Unspecified pain icd 10