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ICD-10-CM 2027 diagnosis code

M47.899Other spondylosis, site unspecified

✓ Billable / specific

M47.899 is a valid, billable ICD-10-CM code for other spondylosis, 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 M47.899

M47.899 is the ICD-10-CM diagnosis code for other spondylosis, site unspecified. It belongs to category M47 (spondylosis), block M45-M49 (spondylopathies) 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 M47.89, choose M47.899 (site unspecified) only when documentation doesn't support a more specific option: occipito-atlanto-axial region (M47.891), cervical region (M47.892), cervicothoracic region (M47.893), thoracic region (M47.894), thoracolumbar region (M47.895), lumbar region (M47.896), lumbosacral region (M47.897) and sacral and sacrococcygeal region (M47.898).

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 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), 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 721.90 (spondylosis of unspecified site, without mention of myelopathy).

Notes that apply from higher levels

Instructions written at a parent level also apply to M47.899.

› From M47 Spondylosis
Includes
  • arthrosis or osteoarthritis of spine
  • degeneration of facet joints

Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to M47.899.

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.

MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue

ICD-9-CM equivalent

Converter →
  • 721.90Spondylosis of unspecified site, without mention of myelopathyapproximate

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 M47.899

Is M47.899 billable?

Yes. M47.899 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M47.899 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M47.899 as a principal diagnosis.

Is M47.899 a CC or MCC?

No. M47.899 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does M47.899 group to?

M47.899 is used in the MS-DRG v44.0 logic for MS-DRG 551 (Medical Back Problems with MCC) and MS-DRG 552 (Medical Back Problems without 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 M47.899?

The CMS General Equivalence Mappings map M47.899 to ICD-9-CM 721.90.