Version 2024

2024 ICD-10-CM Diagnosis Code M43.9

Deforming dorsopathy, unspecified

ICD-10-CM Code:: M43.9
ICD-10 Code for:: Deforming dorsopathy, unspecified
Is Billable?: Yes - Valid for Submission
Chronic Condition Indicator: ^[1]: Chronic
Code Navigator:

Code Information
Approximate Synonyms
Clinical Classification
Tabular List of Diseases and Injuries
Index to Diseases and Injuries References
Diagnostic Related Groups Mapping
Convert to ICD-9 Code
Patient Education
Other Codes Used Similar Conditions
Code History

Code Classification

Diseases of the musculoskeletal system and connective tissue
(M00–M99)
- Deforming dorsopathies
  (M40-M43)
  - Other deforming dorsopathies
    (M43)

M43.9 is a billable diagnosis code used to specify a medical diagnosis of deforming dorsopathy, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like M43.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Acquired curvature of spine
Acquired deformity of spine
Cervical spine deformity
Curvature of spine
Deformity of cervical vertebra
Deformity of joint of thoracic spine
Deformity of lumbar spine
Deformity of spine
Deformity of spine due to injury
Deformity of thoracic spine
Deformity of thoracic vertebra
Effect of movement on spine deformity - finding
Effect of movement on spine deformity - finding
Effect of movement on spine deformity - finding
Effect of movement on spine deformity - finding
Movement corrects spinal deformity
Movement does not correct spinal deformity
Movement does not reduce spinal deformity
Movement reduces spinal deformity
Spinal curvature convex to the left
Spinal curvature convex to the right

Clinical Classification

Clinical Category is Spondylopathies/spondyloarthropathy (including infective)
CCSR Category Code: MUS011
Inpatient Default CCSR: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
Outpatient Default CCSR: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.

Inclusion Terms

Curvature of spine NOS

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

- Dorsopathy - M53.9
- - deforming - M43.9

M43.9 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
456	SPINAL FUSION EXCEPT CERVICAL WITH SPINAL CURVATURE, MALIGNANCY, INFECTION OR EXTENSIVE FUSIONS WITH MCC	08	8.4294
457	SPINAL FUSION EXCEPT CERVICAL WITH SPINAL CURVATURE, MALIGNANCY, INFECTION OR EXTENSIVE FUSIONS WITH CC	08	6.0753
458	SPINAL FUSION EXCEPT CERVICAL WITH SPINAL CURVATURE, MALIGNANCY, INFECTION OR EXTENSIVE FUSIONS WITHOUT CC/MCC	08	4.531

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert M43.9 to ICD-9-CM

ICD-9-CM Code: 737.8 - Curvature of spine NEC
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education

Spine Injuries and Disorders

Your backbone, or spine, is made up of 26 bone discs called vertebrae. The vertebrae protect your spinal cord and allow you to stand and bend. A number of problems can change the structure of the spine or damage the vertebrae and surrounding tissue. They include:

Infections
Injuries
Tumors
Conditions, such as ankylosing spondylitis and scoliosis
Bone changes that come with age, such as spinal stenosis and herniated disks

Spinal diseases often cause pain when bone changes put pressure on the spinal cord or nerves. They can also limit movement. Treatments differ by disease, but sometimes they include back braces and surgery.

[Learn More in MedlinePlus]

Other ICD-10-CM Codes Commonly Used for Similar Conditions

Filter related codes list:

M43 Other deforming dorsopathies.
M43.0 Spondylolysis.
M43.00 Spondylolysis, site unspecified.
M43.01 Spondylolysis, occipito-atlanto-axial region.
M43.02 Spondylolysis, cervical region.
M43.03 Spondylolysis, cervicothoracic region.
M43.04 Spondylolysis, thoracic region.
M43.05 Spondylolysis, thoracolumbar region.
M43.06 Spondylolysis, lumbar region.
M43.07 Spondylolysis, lumbosacral region.
M43.08 Spondylolysis, sacral and sacrococcygeal region.
M43.09 Spondylolysis, multiple sites in spine.
M43.1 Spondylolisthesis.
M43.10 Spondylolisthesis, site unspecified.
M43.11 Spondylolisthesis, occipito-atlanto-axial region.
M43.12 Spondylolisthesis, cervical region.
M43.13 Spondylolisthesis, cervicothoracic region.
M43.14 Spondylolisthesis, thoracic region.
M43.15 Spondylolisthesis, thoracolumbar region.
M43.16 Spondylolisthesis, lumbar region.
M43.17 Spondylolisthesis, lumbosacral region.
M43.18 Spondylolisthesis, sacral and sacrococcygeal region.
M43.19 Spondylolisthesis, multiple sites in spine.
M43.2 Fusion of spine.
M43.20 Fusion of spine, site unspecified.
M43.21 Fusion of spine, occipito-atlanto-axial region.
M43.22 Fusion of spine, cervical region.
M43.23 Fusion of spine, cervicothoracic region.
M43.24 Fusion of spine, thoracic region.
M43.25 Fusion of spine, thoracolumbar region.
M43.26 Fusion of spine, lumbar region.
M43.27 Fusion of spine, lumbosacral region.
M43.28 Fusion of spine, sacral and sacrococcygeal region.
M43.3 Recurrent atlantoaxial dislocation with myelopathy.
M43.4 Other recurrent atlantoaxial dislocation.
M43.5 Other recurrent vertebral dislocation.
M43.5X Other recurrent vertebral dislocation.
M43.5X2 Other recurrent vertebral dislocation, cervical region.
M43.5X3 Other recurrent vertebral dislocation, cervicothoracic region.
M43.5X4 Other recurrent vertebral dislocation, thoracic region.
M43.5X5 Other recurrent vertebral dislocation, thoracolumbar region.
M43.5X6 Other recurrent vertebral dislocation, lumbar region.
M43.5X7 Other recurrent vertebral dislocation, lumbosacral region.
M43.5X8 Other recurrent vertebral dislocation, sacral and sacrococcygeal region.
M43.5X9 Other recurrent vertebral dislocation, site unspecified.
M43.6 Torticollis.
M43.8 Other specified deforming dorsopathies.
M43.8X Other specified deforming dorsopathies.
M43.8X1 Other specified deforming dorsopathies, occipito-atlanto-axial region.
M43.8X2 Other specified deforming dorsopathies, cervical region.
M43.8X3 Other specified deforming dorsopathies, cervicothoracic region.

Code History

FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
The condition places limitations on self-care, independent living, and social interactions.