M79.669 – Pain in unspecified lower leg

The diagnosis code range M00–M99 in ICD-10-CM covers "diseases of the musculoskeletal system and connective tissue." This includes conditions affecting bones, joints, muscles, ligaments, and connective tissues, such as arthritis, back pain, and other soft tissue disorders.

The medical code M79.64 refers to "pain in hand and fingers" in the ICD-10-CM system.

M79.609 is the ICD-10-CM code for "pain in unspecified limb." It is used when a patient experiences limb pain but the specific location (such as arm or leg) is not identified in the documentation.