2019/2020

  1. ICD-10-CM Codes
    2. ›
  2. M00-M99 Diseases of the musculoskeletal system and connective tissue
    3. ›
  3. M40-M43 Deforming dorsopathies
    4. ›
  4. M43- Other deforming dorsopathies
    5. ›

2020 ICD-10-CM Diagnosis Code M43.6

Torticollis

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M43.6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M43.6 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M43.6 - other international versions of ICD-10 M43.6 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as M43.6. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • congenital (sternomastoid) torticollis (
    ICD-10-CM Diagnosis Code Q68.0

    Congenital deformity of sternocleidomastoid muscle

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital contracture of sternocleidomastoid (muscle)
    • Congenital (sternomastoid) torticollis
    • Sternomastoid tumor (congenital)
    Q68.0
    )
  • current injury - see Injury, of spine, by body region
  • ocular torticollis (
    ICD-10-CM Diagnosis Code R29.891

    Ocular torticollis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • congenital (sternomastoid) torticollis Q68.0
    • psychogenic torticollis (F45.8)
    • spasmodic torticollis (G24.3)
    • torticollis due to birth injury (P15.8)
    • torticollis NOS M43.6
    R29.891
    )
  • psychogenic torticollis (
    ICD-10-CM Diagnosis Code F45.8

    Other somatoform disorders

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Psychogenic dysmenorrhea
    • Psychogenic dysphagia, including 'globus hystericus'
    • Psychogenic pruritus
    • Psychogenic torticollis
    • Somatoform autonomic dysfunction
    • Teeth grinding
    Type 1 Excludes
    • sleep related teeth grinding (G47.63)
    F45.8
    )
  • spasmodic torticollis (
    ICD-10-CM Diagnosis Code G24.3

    Spasmodic torticollis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • congenital torticollis (Q68.0)
    • hysterical torticollis (F44.4)
    • ocular torticollis (R29.891)
    • psychogenic torticollis (F45.8)
    • torticollis NOS (M43.6)
    • traumatic recurrent torticollis (S13.4)
    G24.3
    )
  • torticollis due to birth injury (
    ICD-10-CM Diagnosis Code P15.2

    Sternomastoid injury due to birth injury

      2016 2017 2018 2019 2020 Billable/Specific Code Code on Newborn Record
    P15.2
    )
The following code(s) above M43.6 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M43.6:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • 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
    • 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)
    Diseases of the musculoskeletal system and connective tissue
  • M43
    ICD-10-CM Diagnosis Code M43

    Other deforming dorsopathies

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital spondylolysis and spondylolisthesis (Q76.2)
    • hemivertebra (Q76.3-Q76.4)
    • Klippel-Feil syndrome (Q76.1)
    • lumbarization and sacralization (Q76.4)
    • platyspondylisis (Q76.4)
    • spina bifida occulta (Q76.0)
    • spinal curvature in osteoporosis (M80.-)
    • spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)
    Other deforming dorsopathies
Approximate Synonyms
  • Neck stiffness
  • Sandifer syndrome
  • Stiff neck
Clinical Information
  • A symptom, not a disease, of a twisted neck. In most instances, the head is tipped toward one side and the chin rotated toward the other. The involuntary muscle contractions in the neck region of patients with torticollis can be due to congenital defects, trauma, inflammation, tumors, and neurological or other factors.
  • Contracted state of the cervical muscles, producing twisting of the neck and an unnatural position of the head.
ICD-10-CM M43.6 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 551 Medical back problems with mcc
  • 552 Medical back problems without mcc

Convert M43.6 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to M43.6:
  • Type 1 Excludes: G24.3
    , R29.891
    ICD-10-CM Diagnosis Code G24.3

    Spasmodic torticollis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • congenital torticollis (Q68.0)
    • hysterical torticollis (F44.4)
    • ocular torticollis (R29.891)
    • psychogenic torticollis (F45.8)
    • torticollis NOS (M43.6)
    • traumatic recurrent torticollis (S13.4)
    ICD-10-CM Diagnosis Code R29.891

    Ocular torticollis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • congenital (sternomastoid) torticollis Q68.0
    • psychogenic torticollis (F45.8)
    • spasmodic torticollis (G24.3)
    • torticollis due to birth injury (P15.8)
    • torticollis NOS M43.6

Diagnosis Index entries containing back-references to M43.6:

ICD-10-CM Codes Adjacent To M43.6
M43.5 Other recurrent vertebral dislocation
M43.5X Other recurrent vertebral dislocation
M43.5X2 …… cervical region
M43.5X3 …… cervicothoracic region
M43.5X4 …… thoracic region
M43.5X5 …… thoracolumbar region
M43.5X6 …… lumbar region
M43.5X7 …… lumbosacral region
M43.5X8 …… sacral and sacrococcygeal region
M43.5X9 …… site unspecified
M43.6 Torticollis
M43.8 Other specified deforming dorsopathies
M43.8X Other specified deforming dorsopathies
M43.8X1 …… occipito-atlanto-axial region
M43.8X2 …… cervical region
M43.8X3 …… cervicothoracic region
M43.8X4 …… thoracic region
M43.8X5 …… thoracolumbar region
M43.8X6 …… lumbar region
M43.8X7 …… lumbosacral region
M43.8X8 …… sacral and sacrococcygeal region

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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