847 Sprains and strains of other and unspecified parts of back 
847.0 Sprain of neck convert 847.0 to ICD-10-CM 847.1 Sprain of thoracic convert 847.1 to ICD-10-CM 847.2 Sprain of lumbar convert 847.2 to ICD-10-CM 847.3 Sprain of sacrum convert 847.3 to ICD-10-CM 847.4 Sprain of coccyx convert 847.4 to ICD-10-CM
847.9 Sprain of unspecified site of back convert 847.9 to ICD-10-CM