ICD-10-CM M79: Other and unspecified soft tissue disorders, not elsewhere classified

ICD-10-CM Diagnosis Code (2025)

Official Description for M79

Other and unspecified soft tissue disorders, not elsewhere classified

Coding Notes & Guidelines for M79

Excludes1: Not Coded Here
  • psychogenic rheumatism (F45.8)
  • soft tissue pain, psychogenic (F45.41)
Excludes1: Not Coded Here
  • fibromyalgia (M79.7)
  • palindromic rheumatism (M12.3-)
Excludes1: Not Coded Here
  • fibromyalgia (M79.7)
  • myositis (M60.-)
Excludes1: Not Coded Here
  • brachial radiculitis NOS (M54.1)
  • lumbosacral radiculitis NOS (M54.1)
  • mononeuropathies (G56-G58)
  • radiculitis NOS (M54.1)
  • sciatica (M54.3-M54.4)
Excludes1: Not Coded Here
  • lupus panniculitis (L93.2)
  • neck and back panniculitis (M54.0-)
  • relapsing [Weber-Christian] panniculitis (M35.6)
Excludes1: Not Coded Here
  • foreign body granuloma of skin and subcutaneous tissue (L92.3)
  • foreign body granuloma of soft tissue (M60.2-)
Excludes1: Not Coded Here
  • compartment syndrome NOS (T79.A-)
  • fibromyalgia (M79.7)
  • nontraumatic ischemic infarction of muscle (M62.2-)
  • traumatic compartment syndrome (T79.A-)
Excludes2: Not Included Here

pain in joint (M25.5-)

Code First

, if applicable, associated postprocedural complication

Inclusion Terms

Myofascial pain syndrome

Inclusion Terms

Pain in right upper limb NOS

Inclusion Terms

Pain in left upper limb NOS

Inclusion Terms

Pain in upper limb NOS

Inclusion Terms

Pain in right lower limb NOS

Inclusion Terms

Pain in left lower limb NOS

Inclusion Terms

Pain in lower limb NOS

Inclusion Terms

Pain in limb NOS

Inclusion Terms

Pain in axillary region

Inclusion Terms
  • Fibromyositis
  • Fibrositis
  • Myofibrositis
Inclusion Terms

Nontraumatic compartment syndrome of shoulder, arm, forearm, wrist, hand, and fingers

Inclusion Terms

Nontraumatic compartment syndrome of hip, buttock, thigh, leg, foot, and toes

Inclusion Terms
  • Nontraumatic hematoma of muscle
  • Nontraumatic seroma of muscle and soft tissue
Inclusion Terms

Polyalgia

Child Codes (More Specific Codes for M79):

M79.0 - Rheumatism, unspecified M79.1 - Myalgia 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 M79.4 - Hypertrophy of (infrapatellar) fat pad M79.5 - Residual foreign body in soft tissue M79.6 - Pain in limb, hand, foot, fingers and toes M79.60 - Pain in limb, unspecified M79.601 - Pain in right arm M79.602 - Pain in left arm M79.603 - Pain in arm, unspecified M79.604 - Pain in right leg M79.605 - Pain in left leg 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 M79.8 - Other specified soft tissue disorders M79.81 - Nontraumatic hematoma of soft tissue M79.89 - Other specified soft tissue disorders M79.9 - Soft tissue disorder, unspecified M79.A - Nontraumatic compartment syndrome M79.A1 - Nontraumatic compartment syndrome of upper extremity 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 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

About ICD-10-CM Code M79 (Other and unspecified soft tissue disorders)

ICD-10-CM code M79 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M79 became effective on October 1, 2024.

This page provides detailed information about M79 - Other and unspecified soft tissue disorders, not elsewhere classified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other and unspecified soft tissue disorders related to not elsewhere classified.