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 (M12.3-)
  | 
	 
 
 | 
	   | 
 |  | 
	
		 M79.1 | 
		  | 
		Myalgia | 
	 
	
		 |  | 
		
| Myofascial pain syndrome |  	
		| Excludes1 | 
		fibromyalgia (M79.7) myositis (M60.-)
  | 
	 
 
 | 
	  |  | 
	
		 M79.10 | 
		 | 
		Myalgia, unspecified site | 
	 
  |   |  | 
	
		 M79.11 | 
		 | 
		Myalgia of mastication muscle | 
	 
  |   |  | 
	
		 M79.12 | 
		 | 
		Myalgia of auxiliary muscles, head and neck | 
	 
  |   |  | 
	
		 M79.18 | 
		 | 
		Myalgia, other site | 
	 
  |    | 
 |  | 
	
		 M79.2 | 
		  | 
		Neuralgia and neuritis, unspecified | 
	 
	
		 |  | 
		
 | 
	   | 
 |  | 
	
		 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 | 
	 
	
		 |  | 
		
 | 
	   |   |  | 
	
		 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 | 
	 
	
		 |  | 
		
 | 
	   |   |  | 
	
		 M79.609 | 
		  | 
		Pain in unspecified limb | 
	 
	
		 |  | 
		
 | 
	   |    |   |  | 
	
		 M79.62 | 
		  | 
		Pain in upper arm | 
	 
	
		 |  | 
		
 | 
	  |  | 
	
		 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 | 
	 
	
		 |  | 
		
	
		| CodeFirst | 
		, 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 | 
	 
	
		 |  | 
		
 | 
	   |    | 
 |  | 
	
		 M79.9 | 
		 | 
		Soft tissue disorder, unspecified | 
	 
  |