Diseases of the musculoskeletal system and connective tissue M00-M99

Diseases of the musculoskeletal system and connective tissue M00-M99

  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (M00-M99) and the excluded code together.
  • arthropathic psoriasis (
    ICD-10-CM Diagnosis Code L40.5

    Arthropathic psoriasis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • certain conditions originating in the perinatal period (
    ICD-10-CM Diagnosis Code P04

    Newborn affected by noxious substances transmitted via placenta or breast milk

      2016 2017 - Revised Code 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    • nonteratogenic effects of substances transmitted via placenta
    Type 2 Excludes
    • congenital malformations (Q00-Q99)
    • encounter for observation of newborn for suspected diseases and conditions ruled out (Z05.-)
    • neonatal jaundice from excessive hemolysis due to drugs or toxins transmitted from mother (P58.4)
    • newborn in contact with and (suspected) exposures hazardous to health not transmitted via placenta or breast milk (Z77.-)
    ICD-10-CM Diagnosis Code P96

    Other conditions originating in the perinatal period

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • certain infectious and parasitic diseases (A00-B99
    ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    • A00-A09 Intestinal infectious diseases
    • A15-A19 Tuberculosis
    • A20-A28 Certain zoonotic bacterial diseases
    • A30-A49 Other bacterial diseases
    • A50-A64 Infections with a predominantly sexual m...
    • A65-A69 Other spirochetal diseases
    • A70-A74 Other diseases caused by chlamydiae
    • A75-A79 Rickettsioses
    • A80-A89 Viral and prion infections of the centra...
    • A90-A99 Arthropod-borne viral fevers and viral h...
    • B00-B09 Viral infections characterized by skin a...
    • B10-B10 Other human herpesviruses
    • B15-B19 Viral hepatitis
    • B20-B20 Human immunodeficiency virus [HIV] disea...
    • B25-B34 Other viral diseases
    • B35-B49 Mycoses
    • B50-B64 Protozoal diseases
    • B65-B83 Helminthiases
    • B85-B89 Pediculosis, acariasis and other infesta...
    • B90-B94 Sequelae of infectious and parasitic dis...
    • B95-B97 Bacterial and viral infectious agents
    • B99-B99 Other infectious diseases
  • compartment syndrome (traumatic) (
    ICD-10-CM Diagnosis Code T79.A

    Traumatic compartment syndrome

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • fibromyalgia (M79.7)
    • nontraumatic compartment syndrome (M79.A-)
    Type 2 Excludes
    • traumatic ischemic infarction of muscle (T79.6)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A
    ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    • O00-O08 Pregnancy with abortive outcome
    • O09-O09 Supervision of high risk pregnancy
    • O10-O16 Edema, proteinuria and hypertensive diso...
    • O20-O29 Other maternal disorders predominantly r...
    • O30-O48 Maternal care related to the fetus and a...
    • O60-O77 Complications of labor and delivery
    • O80-O82 Encounter for delivery
    • O85-O92 Complications predominantly related to t...
    • O94-O9A Other obstetric conditions, not elsewher...
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99
    ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    • Q00-Q07 Congenital malformations of the nervous ...
    • Q10-Q18 Congenital malformations of eye, ear, fa...
    • Q20-Q28 Congenital malformations of the circulat...
    • Q30-Q34 Congenital malformations of the respirat...
    • Q35-Q37 Cleft lip and cleft palate
    • Q38-Q45 Other congenital malformations of the di...
    • Q50-Q56 Congenital malformations of genital orga...
    • Q60-Q64 Congenital malformations of the urinary ...
    • Q65-Q79 Congenital malformations and deformation...
    • Q80-Q89 Other congenital malformations
    • Q90-Q99 Chromosomal abnormalities, not elsewhere...
  • endocrine, nutritional and metabolic diseases (
    ICD-10-CM Diagnosis Code E00

    Congenital iodine-deficiency syndrome

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • subclinical iodine-deficiency hypothyroidism (E02)
    Use Additional
    • code (F70-F79) to identify associated intellectual disabilities.
    ICD-10-CM Diagnosis Code E88

    Other and unspecified metabolic disorders

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • histiocytosis X (chronic) (C96.6)
    Use Additional
    • codes for associated conditions
  • injury, poisoning and certain other consequences of external causes (S00-T88
    ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    • S00-S09 Injuries to the head
    • S10-S19 Injuries to the neck
    • S20-S29 Injuries to the thorax
    • S30-S39 Injuries to the abdomen, lower back, lum...
    • S40-S49 Injuries to the shoulder and upper arm
    • S50-S59 Injuries to the elbow and forearm
    • S60-S69 Injuries to the wrist, hand and fingers
    • S70-S79 Injuries to the hip and thigh
    • S80-S89 Injuries to the knee and lower leg
    • S90-S99 Injuries to the ankle and foot
    • T07-T07 Injuries involving multiple body regions
    • T14-T14 Injury of unspecified body region
    • T15-T19 Effects of foreign body entering through...
    • T20-T25 Burns and corrosions of external body su...
    • T26-T28 Burns and corrosions confined to eye and...
    • T30-T32 Burns and corrosions of multiple and uns...
    • T33-T34 Frostbite
    • T36-T50 Poisoning by, adverse effect of and unde...
    • T51-T65 Toxic effects of substances chiefly nonm...
    • T66-T78 Other and unspecified effects of externa...
    • T79-T79 Certain early complications of trauma
    • T80-T88 Complications of surgical and medical ca...
  • neoplasms (C00-D49
    ICD-10-CM Range C00-D49


    • C00-C14 Malignant neoplasms of lip, oral cavity ...
    • C15-C26 Malignant neoplasms of digestive organs
    • C30-C39 Malignant neoplasms of respiratory and i...
    • C40-C41 Malignant neoplasms of bone and articula...
    • C43-C44 Melanoma and other malignant neoplasms o...
    • C45-C49 Malignant neoplasms of mesothelial and s...
    • C50-C50 Malignant neoplasms of breast
    • C51-C58 Malignant neoplasms of female genital or...
    • C60-C63 Malignant neoplasms of male genital orga...
    • C64-C68 Malignant neoplasms of urinary tract
    • C69-C72 Malignant neoplasms of eye, brain and ot...
    • C73-C75 Malignant neoplasms of thyroid and other...
    • C76-C80 Malignant neoplasms of ill-defined, othe...
    • C7A-C7A Malignant neuroendocrine tumors
    • C7B-C7B Secondary neuroendocrine tumors
    • C81-C96 Malignant neoplasms of lymphoid, hematop...
    • D00-D09 In situ neoplasms
    • D10-D36 Benign neoplasms, except benign neuroend...
    • D37-D48 Neoplasms of uncertain behavior, polycyt...
    • D3A-D3A Benign neuroendocrine tumors
    • D49-D49 Neoplasms of unspecified behavior
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (
    ICD-10-CM Diagnosis Code R00

    Abnormalities of heart beat

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • abnormalities originating in the perinatal period (P29.1-)
    Type 2 Excludes
    • specified arrhythmias (I47-I49)
    ICD-10-CM Diagnosis Code R94

    Abnormal results of function studies

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    • abnormal results of radionuclide [radioisotope] uptake studies
    • abnormal results of scintigraphy
ICD-10-CM Range M00-M02

Infectious arthropathies

  • This block comprises arthropathies due to microbiological agents. Distinction is made between the following types of etiological relationship:
  • a) direct infection of joint, where organisms invade synovial tissue and microbial antigen is present in the joint;
  • b) indirect infection, which may be of two types: a reactive arthropathy, where microbial infection of the body is established but neither organisms nor antigens can be identified in the joint, and a postinfective arthropathy, where microbial antigen is present but recovery of an organism is inconstant and evidence of local multiplication is lacking.
  • M00 Pyogenic arthritis
  • M01 Direct infections of joint in infectious...
  • M02 Postinfective and reactive arthropathies
ICD-10-CM Range M04-M04

Autoinflammatory syndromes

  • M04 Autoinflammatory syndromes
ICD-10-CM Range M05-M14

Inflammatory polyarthropathies

  • M05 Rheumatoid arthritis with rheumatoid fac...
  • M06 Other rheumatoid arthritis
  • M07 Enteropathic arthropathies
  • M08 Juvenile arthritis
  • M10 Gout
  • M11 Other crystal arthropathies
  • M12 Other and unspecified arthropathy
  • M13 Other arthritis
  • M14 Arthropathies in other diseases classifi...
  • M1A Chronic gout
ICD-10-CM Range M15-M19


Type 2 Excludes
  • osteoarthritis of spine (M47.-)
  • M15 Polyosteoarthritis
  • M16 Osteoarthritis of hip
  • M17 Osteoarthritis of knee
  • M18 Osteoarthritis of first carpometacarpal ...
  • M19 Other and unspecified osteoarthritis
ICD-10-CM Range M20-M25

Other joint disorders

Type 2 Excludes
  • M20 Acquired deformities of fingers and toes
  • M21 Other acquired deformities of limbs
  • M22 Disorder of patella
  • M23 Internal derangement of knee
  • M24 Other specific joint derangements
  • M25 Other joint disorder, not elsewhere clas...
ICD-10-CM Range M26-M27

Dentofacial anomalies [including malocclusion] and other disorders of jaw

Type 1 Excludes
  • hemifacial atrophy or hypertrophy (Q67.4)
  • unilateral condylar hyperplasia or hypoplasia (M27.8)
  • M26 Dentofacial anomalies [including maloccl...
  • M27 Other diseases of jaws
ICD-10-CM Range M30-M36

Systemic connective tissue disorders

  • autoimmune disease NOS
  • collagen (vascular) disease NOS
  • systemic autoimmune disease
  • systemic collagen (vascular) disease
Type 1 Excludes
  • autoimmune disease, single organ or single cell-type -code to relevant condition category
  • M30 Polyarteritis nodosa and related conditi...
  • M31 Other necrotizing vasculopathies
  • M32 Systemic lupus erythematosus (SLE)
  • M33 Dermatopolymyositis
  • M34 Systemic sclerosis [scleroderma]
  • M35 Other systemic involvement of connective...
  • M36 Systemic disorders of connective tissue ...
ICD-10-CM Range M40-M43

Deforming dorsopathies

  • M40 Kyphosis and lordosis
  • M41 Scoliosis
  • M42 Spinal osteochondrosis
  • M43 Other deforming dorsopathies
ICD-10-CM Range M45-M49


  • M45 Ankylosing spondylitis
  • M46 Other inflammatory spondylopathies
  • M47 Spondylosis
  • M48 Other spondylopathies
  • M49 Spondylopathies in diseases classified e...
ICD-10-CM Range M50-M54

Other dorsopathies

Type 1 Excludes
  • current injury - see injury of spine by body region
  • discitis NOS (M46.4-)
  • M50 Cervical disc disorders
  • M51 Thoracic, thoracolumbar, and lumbosacral...
  • M53 Other and unspecified dorsopathies, not ...
  • M54 Dorsalgia
ICD-10-CM Range M60-M63

Disorders of muscles

Type 1 Excludes
  • dermatopolymyositis (M33.-)
  • muscular dystrophies and myopathies (G71-G72)
  • myopathy in amyloidosis (E85.-)
  • myopathy in polyarteritis nodosa (M30.0)
  • myopathy in rheumatoid arthritis (M05.32)
  • myopathy in scleroderma (M34.-)
  • myopathy in Sjögren's syndrome (M35.03)
  • myopathy in systemic lupus erythematosus (M32.-)
  • M60 Myositis
  • M61 Calcification and ossification of muscle
  • M62 Other disorders of muscle
  • M63 Disorders of muscle in diseases classifi...
ICD-10-CM Range M65-M67

Disorders of synovium and tendon

  • M65 Synovitis and tenosynovitis
  • M66 Spontaneous rupture of synovium and tend...
  • M67 Other disorders of synovium and tendon
ICD-10-CM Range M70-M79

Other soft tissue disorders

  • M70 Soft tissue disorders related to use, ov...
  • M71 Other bursopathies
  • M72 Fibroblastic disorders
  • M75 Shoulder lesions
  • M76 Enthesopathies, lower limb, excluding fo...
  • M77 Other enthesopathies
  • M79 Other and unspecified soft tissue disord...
ICD-10-CM Range M80-M85

Disorders of bone density and structure

  • M80 Osteoporosis with current pathological f...
  • M81 Osteoporosis without current pathologica...
  • M83 Adult osteomalacia
  • M84 Disorder of continuity of bone
  • M85 Other disorders of bone density and stru...
ICD-10-CM Range M86-M90

Other osteopathies

Type 1 Excludes
  • postprocedural osteopathies (M96.-)
  • M86 Osteomyelitis
  • M87 Osteonecrosis
  • M88 Osteitis deformans [Paget's disease of b...
  • M89 Other disorders of bone
  • M90 Osteopathies in diseases classified else...
ICD-10-CM Range M91-M94


Type 1 Excludes
  • postprocedural chondropathies (M96.-)
  • M91 Juvenile osteochondrosis of hip and pelv...
  • M92 Other juvenile osteochondrosis
  • M93 Other osteochondropathies
  • M94 Other disorders of cartilage
ICD-10-CM Range M95-M95

Other disorders of the musculoskeletal system and connective tissue

  • M95 Other acquired deformities of musculoske...
ICD-10-CM Range M96-M96

Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified

  • M96 Intraoperative and postprocedural compli...
ICD-10-CM Range M97-M97

Periprosthetic fracture around internal prosthetic joint

  • M97 Periprosthetic fracture around internal ...
ICD-10-CM Range M99-M99

Biomechanical lesions, not elsewhere classified

  • M99 Biomechanical lesions, not elsewhere cla...