ICD-10-CM Excludes2 Notes · Chapter 13 · FY 2027 M00-M99
Excludes2 Notes in Chapter 13: Diseases of the musculoskeletal system and connective tissue ICD-10-CM
An Excludes2 note means "NOT INCLUDED HERE": the excluded condition is not part of this code, but a patient may have both, so both codes may be reported. In Chapter 13 (M00-M99), notes printed in the chapter name other codes 139 times, and Excludes2 Notes anywhere in the Tabular List name the chapter’s codes 157 times, covering 116 distinct codes, categories and ranges. Switch views to read the list either way.
✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
139
References in Its Notes
157
References to Its Codes
116
Chapter Codes Named
M00-M99
Chapter 13
Chapter 13
Excludes2 Notes by the code that carries the note
74 of 74 shown
- Chapter note Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- infection and inflammatory reaction due to internal joint prosthesis (T84.5-)
- Crohn's disease (K50.-)
- chronic gout (M1A.-)
- osteoarthritis of spine (M47.-)
- acute gout (M10.-)
- bunion (M21.6-)
- coxa plana (M91.2)
- traumatic dislocation of patella (S83.0-)
- loose body in knee (M23.4)
- spine (M43.2-)
- iliotibial band syndrome (M76.3)
- spinal instabilities (M53.2-)
- embedded and impacted teeth (K01.-)
- M27.2 Inflammatory conditions of jaws
- osteonecrosis of jaw due to drug (M87.180)
- M27.63 Post-osseointegration mechanical failure of dental implant
- M35.7 Hypermobility syndrome
- Ehlers-Danlos syndromes (Q79.6-)
- arthropathies in diseases classified elsewhere (M14.-)
- Behçet's disease (M35.2)
- brachial radiculitis NOS (M54.13)
- M53.1 Cervicobrachial syndrome
- inclusion body myositis [IBM] (G72.41)
- nontraumatic hematoma of muscle (M79.81)
- rupture of tendon (M66.-)
- pelvic muscle wasting (N81.84)
- nontraumatic hematoma of muscle (M79.81)
- rotator cuff syndrome (M75.1-)
- rupture of popliteal cyst (M66.0)
- calcium deposit in bursa of shoulder (M75.3)
- retroperitoneal fibromatosis (D48.3)
- shoulder-hand syndrome (M89.0-)
- pain in joint (M25.5-)
- personal history of (healed) osteoporosis fracture (Z87.310)
- stress fracture of vertebra (M48.4-)
- personal history of (healed) pathological fracture (Z87.311)
- fibrous dysplasia of jaw (M27.8)
- solitary cyst of jaw (M27.4)
- aneurysmal cyst of jaw (M27.4)
- M88.88 Osteitis deformans of other bones
- periprosthetic osteolysis of internal prosthetic joint (T84.05-)
- osteochondrosis of spine (M42.-)
- acquired absence of limbs and organs (Z89-Z90)
- acquired deformities of limbs (M20-M21)
- congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
- deforming dorsopathies (M40-M43)
- dentofacial anomalies [including malocclusion] (M26.-)
- postprocedural musculoskeletal disorders (M96.-)
- M95.0 Acquired deformity of nose
- deviated nasal septum (J34.2)
- other acquired deformities of ear (H61.1)
- M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified applies to 36 codes
- M96.6 Fracture of bone following insertion of orthopedic implant, joint prosthesis, or bone plate applies to 14 codes
- complication of internal orthopedic devices, implants or grafts (T84.-)
- M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified: arthropathy following intestinal bypass (M02.0-)
- T88.1 Other complications following immunization, not elsewhere classified: postimmunization arthropathy (M02.2)
- N34 Urethritis and urethral syndrome: Reiter's disease (M02.3-)
- M04.2 Cryopyrin-associated periodic syndromes
- L50.2 Urticaria due to cold and heat: familial cold urticaria (M04.2)
- M1A Chronic gout: acute gout (M10.-)
- M24.1 Other articular cartilage disorders: chondrocalcinosis (M11.1-, M11.2-)
- M24.1 Other articular cartilage disorders: chondrocalcinosis (M11.1-, M11.2-)
- M36 Systemic disorders of connective tissue in diseases classified elsewhere: arthropathies in diseases classified elsewhere (M14.-)
- M18.0- Bilateral primary osteoarthritis of first carpometacarpal joints
- M19.04 Primary osteoarthritis, hand: primary osteoarthritis of first carpometacarpal joint (M18.0-, M18.1-)
- M19.04 Primary osteoarthritis, hand: primary osteoarthritis of first carpometacarpal joint (M18.0-, M18.1-)
- M18.2- Bilateral post-traumatic osteoarthritis of first carpometacarpal joints
- M19.14 Post-traumatic osteoarthritis, hand: post-traumatic osteoarthritis of first carpometacarpal joint (M18.2-, M18.3-)
- M19.14 Post-traumatic osteoarthritis, hand: post-traumatic osteoarthritis of first carpometacarpal joint (M18.2-, M18.3-)
- M21.6 Other acquired deformities of foot: deformities of toe (acquired) (M20.1-M20.6-)
- M19 Other and unspecified osteoarthritis: hallux rigidus (M20.2)
- M21 Other acquired deformities of limbs: acquired deformities of fingers or toes (M20.-)
- M20.1 Hallux valgus (acquired): bunion (M21.6-)
- S83 Dislocation and sprain of joints and ligaments of knee: recurrent dislocation of knee (M22.0)
- S83 Dislocation and sprain of joints and ligaments of knee: derangement of patella (M22.0-M22.3)
- M24.0 Loose body in joint: loose body in knee (M23.4)
- M23.5-M23.8X9 Chronic instability of knee to Other internal derangements of unspecified knee 24 codes
- M24.2 Disorder of ligament: internal derangement of knee (M23.5-M23.8X9)
- M24 Other specific joint derangements: snapping knee (M23.8-)
- M23 Internal derangement of knee: recurrent dislocation or subluxation of joints (M24.4)
- G89 Pain, not elsewhere classified: shoulder pain (M25.51-)
- M77 Other enthesopathies: osteophyte (M25.7)
- M27.0- Developmental disorders of jaws
- K09 Cysts of oral region, not elsewhere classified: cysts of jaw (M27.0-, M27.4-)
- K08.5 Unsatisfactory restoration of tooth: unsatisfactory endodontic treatment (M27.5-)
- M27.8 Other specified diseases of jaws
- M85.0 Fibrous dysplasia (monostotic): fibrous dysplasia of jaw (M27.8)
- K08 Other disorders of teeth and supporting structures: disorders of jaw (M27.-)
- M30.1 Polyarteritis with lung involvement [Churg-Strauss]
- I77.82 Antineutrophilic cytoplasmic antibody [ANCA] vasculitis: eosinophilic granulomatosis with polyangiitis (M30.1)
- M30-M36 Polyarteritis nodosa and related conditions to Systemic disorders of connective tissue in diseases classified elsewhere 84 codes
- Chapter 9 (I00-I99) Diseases of the circulatory system: systemic connective tissue disorders (M30-M36)
- I77 Other disorders of arteries and arterioles: collagen (vascular) diseases (M30-M36)
- J82 Pulmonary eosinophilia, not elsewhere classified: pulmonary eosinophilia due to systemic connective tissue disorders (M30-M36)
- Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue: systemic connective tissue disorders (M30-M36)
- M31.0 Hypersensitivity angiitis
- I77 Other disorders of arteries and arterioles: hypersensitivity angiitis (M31.0)
- I77.82 Antineutrophilic cytoplasmic antibody [ANCA] vasculitis: granulomatosis with polyangiitis (M31.3-)
- M31.7 Microscopic polyangiitis
- I77.82 Antineutrophilic cytoplasmic antibody [ANCA] vasculitis: microscopic polyangiitis (M31.7)
- M32.13 Lung involvement in systemic lupus erythematosus
- J91 Pleural effusion in conditions classified elsewhere: pleural effusion in systemic lupus erythematosus (M32.13)
- A18.4 Tuberculosis of skin and subcutaneous tissue: systemic lupus erythematosus (M32.-)
- M35.2 Behcet's disease
- M45 Ankylosing spondylitis: Behçet's disease (M35.2)
- M35.6 Relapsing panniculitis [Weber-Christian]
- Block L00-L08 Infections of the skin and subcutaneous tissue: relapsing panniculitis [Weber-Christian] (M35.6)
- M35.9 Systemic involvement of connective tissue, unspecified
- Chapter 3 (D50-D89) Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism: autoimmune disease (systemic) NOS (M35.9)
- M43.8 Other specified deforming dorsopathies: kyphosis and lordosis (M40.-)
- M95 Other acquired deformities of musculoskeletal system and connective tissue: deforming dorsopathies (M40-M43)
- Block M20-M25 Other joint disorders: joints of the spine (M40-M54)
- M43.8 Other specified deforming dorsopathies: scoliosis (M41.-)
- M93 Other osteochondropathies: osteochondrosis of spine (M42.-)
- M24.6 Ankylosis of joint: spine (M43.2-)
- M43.3- Recurrent atlantoaxial dislocation with myelopathy
- M24.4 Recurrent dislocation of joint: recurrent vertebral dislocation (M43.3-, M43.4, M43.5-)
- M43.4 Other recurrent atlantoaxial dislocation
- M24.4 Recurrent dislocation of joint: recurrent vertebral dislocation (M43.3-, M43.4, M43.5-)
- M24.4 Recurrent dislocation of joint: recurrent vertebral dislocation (M43.3-, M43.4, M43.5-)
- M77 Other enthesopathies: spinal enthesopathy (M46.0-)
- M86 Osteomyelitis: vertebra (M46.2-)
- Block M15-M19 Osteoarthritis: osteoarthritis of spine (M47.-)
- M19 Other and unspecified osteoarthritis: arthrosis of spine (M47.-)
- M19 Other and unspecified osteoarthritis: osteoarthritis of spine (M47.-)
- M51.1- Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy 4 codes
- G57.0 Lesion of sciatic nerve: sciatica attributed to intervertebral disc disorder (M51.1.-)
- M25.3 Other instability of joint: spinal instabilities (M53.2-)
- M53.3 Sacrococcygeal disorders, not elsewhere classified
- M51 Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders: sacral and sacrococcygeal disorders (M53.3)
- Block L00-L08 Infections of the skin and subcutaneous tissue: panniculitis of neck and back (M54.0-)
- M54.13 Radiculopathy, cervicothoracic region
- M50.1 Cervical disc disorder with radiculopathy: brachial radiculitis NOS (M54.13)
- M54.2 Cervicalgia
- R07.0 Pain in throat: pain in neck (M54.2)
- G89 Pain, not elsewhere classified: lumbar region pain (M54.5-)
- M54.9 Dorsalgia, unspecified
- G89 Pain, not elsewhere classified: back pain (M54.9)
- G71 Primary disorders of muscles: myositis (M60.-)
- T79.6 Traumatic ischemia of muscle: nontraumatic ischemia of muscle (M62.2-)
- M62.830 Muscle spasm of back
- R25.2 Cramp and spasm: muscle spasm of back (M62.830)
- M62.831 Muscle spasm of calf
- M25 Other joint disorder, not elsewhere classified: calcification of tendon (M65.2-)
- M66.0 Rupture of popliteal cyst
- M66.1 Rupture of synovium: rupture of popliteal cyst (M66.0)
- M62.1 Other rupture of muscle (nontraumatic): rupture of tendon (M66.-)
- M24 Other specific joint derangements: ganglion (M67.4)
- M25 Other joint disorder, not elsewhere classified: calcification of bursa (M71.4-)
- M66 Spontaneous rupture of synovium and tendon: rotator cuff syndrome (M75.1-)
- M24.8 Other specific joint derangements, not elsewhere classified: iliotibial band syndrome (M76.3)
- M71.5 Other bursitis, not elsewhere classified: bursitis of tibial collateral [Pellegrini-Stieda] (M76.4-)
- T79.6 Traumatic ischemia of muscle: anterior tibial syndrome (M76.8)
- M70 Soft tissue disorders related to use, overuse and pressure: enthesopathies (M76-M77)
- M76 Enthesopathies, lower limb, excluding foot: enthesopathies of ankle and foot (M77.5-)
- G89 Pain, not elsewhere classified: myalgia (M79.1-)
- M79.3 Panniculitis, unspecified
- Block L00-L08 Infections of the skin and subcutaneous tissue: panniculitis NOS (M79.3)
- M79.5 Residual foreign body in soft tissue
- Block T15-T19 Effects of foreign body entering through natural orifice: residual foreign body in soft tissue (M79.5)
- M79.81 Nontraumatic hematoma of soft tissue
- N95 Menopausal and other perimenopausal disorders: postmenopausal osteoporosis with current pathological fracture (M80.0-)
- N99 Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified: postoophorectomy osteoporosis with current pathological fracture (M80.8-)
- M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified: disorders associated with osteoporosis (M80)
- M81.0- Age-related osteoporosis without current pathological fracture
- N95 Menopausal and other perimenopausal disorders: postmenopausal osteoporosis (M81.0-)
- M81.8 Other osteoporosis without current pathological fracture
- N99 Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified: postoophorectomy osteoporosis without current pathological fracture (M81.8)
- M83.0 Puerperal osteomalacia
- Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium: puerperal osteomalacia (M83.0)
- Block O85-O92 Complications predominantly related to the puerperium: puerperal osteomalacia (M83.0)
- M87.180 Osteonecrosis due to drugs, jaw
- M27.2 Inflammatory conditions of jaws: osteonecrosis of jaw due to drug (M87.180)
- M88.0 Osteitis deformans of skull
- M88.88 Osteitis deformans of other bones: osteitis deformans of skull (M88.0)
- M88.1 Osteitis deformans of vertebrae
- M88.88 Osteitis deformans of other bones: osteitis deformans of vertebrae (M88.1)
- M75 Shoulder lesions: shoulder-hand syndrome (M89.0-)
- M96.0 Pseudarthrosis after fusion or arthrodesis
- M43.2 Fusion of spine: pseudoarthrosis after fusion or arthrodesis (M96.0)
- M96.1 Postlaminectomy syndrome, not elsewhere classified
- Block T80-T88 Complications of surgical and medical care, not elsewhere classified: postlaminectomy syndrome NEC (M96.1)
- M96.5 Postradiation scoliosis
- M41 Scoliosis: postradiation scoliosis (M96.5)
- M96.6 Fracture of bone following insertion of orthopedic implant, joint prosthesis, or bone plate 14 codes
- M97 Periprosthetic fracture around internal prosthetic joint: fracture of bone following insertion of orthopedic implant, joint prosthesis or bone plate (M96.6-)
- T84 Complications of internal orthopedic prosthetic devices, implants and grafts: fracture of bone following insertion of orthopedic implant, joint prosthesis or bone plate (M96.6)
- M96.89 Other intraoperative and postprocedural complications and disorders of the musculoskeletal system
- M41 Scoliosis: postprocedural scoliosis (M96.89)
- M96.- Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified 36 codes
- M95 Other acquired deformities of musculoskeletal system and connective tissue: postprocedural musculoskeletal disorders (M96.-)
- Block T80-T88 Complications of surgical and medical care, not elsewhere classified: intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
- T81 Complications of procedures, not elsewhere classified: intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)
- S72 Fracture of femur: periprosthetic fracture of prosthetic implant of hip (M97.0-)
- S82 Fracture of lower leg, including ankle: periprosthetic fracture around internal prosthetic implant of knee joint (M97.1-)
- S82 Fracture of lower leg, including ankle: periprosthetic fracture around internal prosthetic ankle joint (M97.2)
- S42 Fracture of shoulder and upper arm: periprosthetic fracture around internal prosthetic shoulder joint (M97.3)
- S52 Fracture of forearm: periprosthetic fracture around internal prosthetic elbow joint (M97.4)
- M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified: periprosthetic fracture around internal prosthetic joint (M97.-)
The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Excludes2 Notes anywhere in the Tabular List, including notes in other chapters.
← Chapter 12: Diseases of the skin and subcutaneous tissueChapter 14: Diseases of the genitourinary system →
Questions About Excludes2 Notes
What does an Excludes2 note mean?
An Excludes2 note means “Not included here”: the excluded condition is not part of the condition represented by the code, but a patient may have both conditions at the same time (Section I.A.12.b). The FY 2027 Tabular List has 2,529 of them; 2,493 name other codes, with 2,799 references to 1,779 distinct codes, categories and ranges.
Can both codes be reported when there is an Excludes2 note?
Yes. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate: that is, when the patient has both conditions and both are documented.
Related References
Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.
