ICD-9 Code 756.9

Other and unspecified anomalies of musculoskeletal system

Not Valid for Submission

756.9 is a legacy non-billable code used to specify a medical diagnosis of other and unspecified anomalies of musculoskeletal system. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 756.9
Short Description:Musculoskel anom NEC/NOS
Long Description:Other and unspecified anomalies of musculoskeletal system

Convert 756.9 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • Q68.8 - Other specified congenital musculoskeletal deformities
  • Q79.8 - Other congenital malformations of musculoskeletal system
  • Q79.9 - Congenital malformation of musculoskeletal system, unsp

Code Classification

  • Congenital anomalies (740–759)
    • Congenital anomalies (740-759)
      • 756 Other congenital musculoskeletal anomalies

Information for Medical Professionals


  • Aberrant forearm extensor muscle
  • Aberrant forearm flexor muscle
  • Aberrant intrinsic muscles of hand
  • Aberrant muscle of the lower limb
  • Aberrant muscle of the upper limb
  • Abnormal endochondral bone formation
  • Absence of bone in arm
  • Absent bone in foot
  • Absent bone in hand
  • Absent patella
  • Accessory ossification center
  • Acephalogaster
  • Achondrogenesis, type IA
  • Acromesomelic dysplasia group
  • Acroscyphodysplasia
  • Atelosteogenesis type 2
  • Atelosteogenesis/diastrophic dysplasia
  • Autosomal recessive spondyloepimetaphyseal dysplasia
  • Beals auriculo-osteodysplasia syndrome
  • Bone absent
  • Bone island
  • Boomerang dysplasia
  • Brachydactyly syndrome type E
  • Chondrodysplasia punctata
  • Combined malformation of central nervous system and skeletal muscle
  • Congenital absence of skeletal bone
  • Congenital anomaly of bone and joint
  • Congenital anomaly of cartilage
  • Congenital anomaly of hyoid bone
  • Congenital anomaly of joint
  • Congenital anomaly of musculoskeletal structure of trunk
  • Congenital anomaly of musculoskeletal system
  • Congenital anomaly of skeletal bone
  • Congenital connective tissue disorder
  • Congenital skeletal dysplasia
  • Cranioectodermal dysplasia
  • Defects of the tubular
  • Deposition in skeletal muscle
  • Desbuquois syndrome
  • Disorder of bone development
  • Disorder: ectopic bone tissue, congenital
  • Disorganized development of cartilaginous and fibrous components of the skeleton
  • Dysosteosclerosis
  • Dysostosis
  • Dysostosis multiplex
  • Dysostosis multiplex group
  • Dysplasia with decreased bone density
  • Dysplasia with defective mineralization
  • Dysplasia with increased bone density
  • Dysplasias with significant membranous bone involvement
  • Endosteal hyperostoses
  • Endosteal hyperostoses with cerebellar hypoplasia
  • Epiphyseal dysplasia
  • Familial expansile osteolysis
  • Finding of arrangement of skeletal muscle
  • Hereditary acrosteolysis
  • Hypochondrogenesis
  • Hypochondroplasia
  • Idiopathic multicentric osteolysis
  • Idiopathic osteolyses
  • Infantile myofibromatosis
  • Jarcho-Levin syndrome
  • Kniest dysplasia
  • Kniest-Stickler dysplasia
  • Leri's pleonosteosis syndrome
  • Lordosis in skeletal dysplasia
  • Mesomelic dysplasia
  • Metaphyseal anadysplasia
  • Mild spondyloepiphyseal dysplasia with premature onset arthrosis
  • Multiple congenital articular rigidities
  • Multiple dislocations with dysplasia
  • Myopathy with abnormality of histochemical fiber type
  • Myopathy with tubular aggregates
  • Paralytic calcification / ossification of muscle
  • Precocious osteodysplasty
  • Progressive pseudorheumatoid dysplasia
  • Pseudoachondroplastic spondyloepiphyseal dysplasia syndrome
  • Pseudochondroplasia
  • Pseudodiastrophic dysplasia
  • Raine dysplasia
  • Schneckenbecken dysplasia
  • Scypho-patellar dysplasia
  • Sialic storage disease
  • Sponastrime dysplasia
  • Spondylodysplasia
  • Spondylodysplasia, Luton type
  • Spondylodysplasia, San Diego type
  • Spondylodysplasia, Torrance type
  • Spondylodysplastic group
  • Spondyloenchondrodysplasia
  • Spondyloenchondromatosis with basal ganglia calcification
  • Spondyloepimetaphyseal disorder
  • Spondyloepimetaphyseal dysplasia with joint laxity
  • Spondyloepiphyseal dysplasia congenita group
  • Spondyloepiphyseal dysplasia tarda
  • Spondyloepiphyseal dysplasia with congenital joint dislocations
  • Tarsal-carpal coalition syndrome
  • Type IV short rib polydactyly syndrome

Index to Diseases and Injuries

References found for the code 756.9 in the Index of Diseases and Injuries:

Information for Patients

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

A birth defect may affect how the body looks, works or both. Some birth defects like cleft lip or neural tube defects are structural problems that can be easy to see. To find others, like heart defects, doctors use special tests. Birth defects can vary from mild to severe. Some result from exposures to medicines or chemicals. For example, alcohol abuse can cause fetal alcohol syndrome. Infections during pregnancy can also result in birth defects. For most birth defects, the cause is unknown.

Some birth defects can be prevented. Taking folic acid can help prevent some birth defects. Talk to your doctor about any medicines you take. Some medicines can cause serious birth defects.

Babies with birth defects may need surgery or other medical treatments. Today, doctors can diagnose many birth defects in the womb. This enables them to treat or even correct some problems before the baby is born.

Centers for Disease Control and Prevention

  • Intersex

[Read More]

Muscle Disorders

Also called: Myopathy

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include

  • Injury or overuse, such as sprains or strains, cramps or tendinitis
  • A genetic disorder, such as muscular dystrophy
  • Some cancers
  • Inflammation, such as myositis
  • Diseases of nerves that affect muscles
  • Infections
  • Certain medicines

Sometimes the cause is not known.

  • Caring for muscle spasticity or spasms
  • Compartment syndrome
  • Contracture deformity
  • Creatine phosphokinase test
  • Electromyography
  • Eyelid twitch
  • Hypotonia
  • Muscle aches
  • Muscle atrophy
  • Muscle biopsy
  • Muscle function loss
  • Muscle twitching
  • Myopathic changes
  • Myotonia congenita
  • Rhabdomyolysis
  • Volkmann ischemic contracture
  • Weakness

[Read More]

ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.