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ICD-10-CM 2027 diagnosis code

M53.2X9Spinal instabilities, site unspecified

✓ Billable / specific

M53.2X9 is a valid, billable ICD-10-CM code for spinal instabilities, site unspecified. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M53.2X9

M53.2X9 is the ICD-10-CM diagnosis code for spinal instabilities, site unspecified. It belongs to category M53 (other and unspecified dorsopathies, not elsewhere classified), block M50-M54 (other dorsopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M53.2X, choose M53.2X9 (site unspecified) only when documentation doesn't support a more specific option: occipito-atlanto-axial region (M53.2X1), cervical region (M53.2X2), cervicothoracic region (M53.2X3), thoracic region (M53.2X4), thoracolumbar region (M53.2X5), lumbar region (M53.2X6), lumbosacral region (M53.2X7) and sacral and sacrococcygeal region (M53.2X8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 718.80 (other joint derangement, not elsewhere classified, site unspecified).

Notes that apply from higher levels

Instructions written at a parent level also apply to M53.2X9.

Broader instructions also apply from M50-M54 Other dorsopathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 718.80Other joint derangement, not elsewhere classified, site unspecifiedapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M53.2X9

Is M53.2X9 billable?

Yes. M53.2X9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M53.2X9 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M53.2X9 as a principal diagnosis.

Is M53.2X9 a CC or MCC?

No. M53.2X9 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does M53.2X9 group to?

M53.2X9 is used in the MS-DRG v44.0 logic for MS-DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC), MS-DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC) and MS-DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for M53.2X9?

The CMS General Equivalence Mappings map M53.2X9 to ICD-9-CM 718.80.