M79 Other and unspecified soft tissue disorders, not elsewhere classified Excludes1: psychogenic rheumatism (F45.8) soft tissue pain, psychogenic (F45.41) M79.0 Rheumatism, unspecified Excludes1: fibromyalgia (M79.7) palindromic rheumatism (.3-) M79.1 Myalgia Myofascial pain syndrome Excludes1: fibromyalgia (M79.7) myositis (.-) M79.2 Neuralgia and neuritis, unspecified Excludes1: brachial radiculitis NOS (M54.1) lumbosacral radiculitis NOS (M54.1) mononeuropathies (G56-G58) radiculitis NOS (M54.1) sciatica (M54.3-M54.4) M79.3 Panniculitis, unspecified Excludes1: lupus panniculitis (L93.2) neck and back panniculitis (M54.0-) relapsing [Weber-Christian] panniculitis (M35.6) M79.4 Hypertrophy of (infrapatellar) fat pad M79.5 Residual foreign body in soft tissue Excludes1: foreign body granuloma of skin and subcutaneous tissue (L92.3) foreign body granuloma of soft tissue (M60.2-) M79.6 Pain in limb, hand, foot, fingers and toes Excludes2: pain in joint (M25.5-) M79.60 Pain in limb, unspecified M79.601 Pain in right arm Pain in right upper limb NOS M79.602 Pain in left arm Pain in left upper limb NOS M79.603 Pain in arm, unspecified Pain in upper limb NOS M79.604 Pain in right leg Pain in right lower limb NOS M79.605 Pain in left leg Pain in left lower limb NOS M79.606 Pain in leg, unspecified Pain in lower limb NOS M79.609 Pain in unspecified limb Pain in limb NOS M79.62 Pain in upper arm Pain in axillary region M79.621 Pain in right upper arm M79.622 Pain in left upper arm M79.629 Pain in unspecified upper arm M79.63 Pain in forearm M79.631 Pain in right forearm M79.632 Pain in left forearm M79.639 Pain in unspecified forearm M79.64 Pain in hand and fingers M79.641 Pain in right hand M79.642 Pain in left hand M79.643 Pain in unspecified hand M79.644 Pain in right finger(s) M79.645 Pain in left finger(s) M79.646 Pain in unspecified finger(s) M79.65 Pain in thigh M79.651 Pain in right thigh M79.652 Pain in left thigh M79.659 Pain in unspecified thigh M79.66 Pain in lower leg M79.661 Pain in right lower leg M79.662 Pain in left lower leg M79.669 Pain in unspecified lower leg M79.67 Pain in foot and toes M79.671 Pain in right foot M79.672 Pain in left foot M79.673 Pain in unspecified foot M79.674 Pain in right toe(s) M79.675 Pain in left toe(s) M79.676 Pain in unspecified toe(s) M79.7 Fibromyalgia Fibromyositis Fibrositis Myofibrositis M79.A Nontraumatic compartment syndrome Code first , if applicable, associated postprocedural complication Excludes1: compartment syndrome NOS (T79.A-) fibromyalgia (M79.7) nontraumatic ischemic infarction of muscle (M62.2-) traumatic compartment syndrome (T79.A-) M79.A1 Nontraumatic compartment syndrome of upper extremity Nontraumatic compartment syndrome of shoulder, arm, forearm, wrist, hand, and fingers M79.A11 Nontraumatic compartment syndrome of right upper extremity M79.A12 Nontraumatic compartment syndrome of left upper extremity M79.A19 Nontraumatic compartment syndrome of unspecified upper extremity M79.A2 Nontraumatic compartment syndrome of lower extremity Nontraumatic compartment syndrome of hip, buttock, thigh, leg, foot, and toes M79.A21 Nontraumatic compartment syndrome of right lower extremity M79.A22 Nontraumatic compartment syndrome of left lower extremity M79.A29 Nontraumatic compartment syndrome of unspecified lower extremity M79.A3 Nontraumatic compartment syndrome of abdomen M79.A9 Nontraumatic compartment syndrome of other sites M79.8 Other specified soft tissue disorders M79.81 Nontraumatic hematoma of soft tissue Nontraumatic hematoma of muscle Nontraumatic seroma of muscle and soft tissue M79.89 Other specified soft tissue disorders Polyalgia M79.9 Soft tissue disorder, unspecified Osteopathies and chondropathies (M80-M94)