Action. Abducts the thumb at the carpometacarpal joint. Innervation:C6-7.the median nerve.

The flexor pollicis brevis muscle (m. flexor pollicis brevis) has two heads. The superficial head arises from the retinaculum flexorum, stretches along the ulnar border of the thenar, and then becomes narrower and attaches to the radial sesamoid bone of the metacarpophalangeal joint of the thumb. The deep head arises from the trapezium, trapezoid, and capitate bones and attaches primarily to the ulnar sesamoid bone and to the base of the proximal phalanx of the thumb and, by a small slip ICD 10 Coding will help you to do collections and also the pending amounts from the patients.