ICD-10-CM 2027 diagnosis code
C41.2Malignant neoplasm of vertebral column
C41.2 is a valid, billable ICD-10-CM code for malignant neoplasm of vertebral column. 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 C41.2
C41.2 is the ICD-10-CM diagnosis code for malignant neoplasm of vertebral column. It belongs to category C41 (malignant neoplasm of bone and articular cartilage of other and unspecified sites), block C40-C41 (malignant neoplasms of bone and articular cartilage) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within C41 (malignant neoplasm of bone and articular cartilage of other and unspecified sites), C41.2 is specifically for malignant neoplasm of vertebral column. Related codes cover bones of skull and face (C41.0), mandible (C41.1), ribs, sternum and clavicle (C41.3), pelvic bones, sacrum and coccyx (C41.4) and bone and articular cartilage, unspecified (C41.9).
Don't report C41.2 together with the conditions in its Excludes1 note: malignant neoplasm of sacrum and coccyx (C41.4).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 456 (Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with MCC, relative weight 7.6244), DRG 457 (Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with CC, relative weight 5.3668), DRG 458 (Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection without CC/MCC, relative weight 4.0388), DRG 542 (Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy with MCC, relative weight 1.7211), DRG 543 (Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy with CC, relative weight 1.006) and DRG 544 (Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy without CC/MCC, relative weight 0.7406), 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 170.2 (malignant neoplasm of vertebral column, excluding sacrum and coccyx).
Coding notes
- malignant neoplasm of sacrum and coccyx (C41.4)
Notes that apply from higher levels
Instructions written at a parent level also apply to C41.2.
Broader instructions also apply from C40-C41 Malignant neoplasms of bone and articular cartilage and Chapter 2: Neoplasms.
Table of Drugs & Neoplasms entries
- Neoplasm, neoplastic › atlas — Malignant Primary
- Neoplasm, neoplastic › bone (periosteum) › atlas — Malignant Primary
- Neoplasm, neoplastic › bone (periosteum) › axis — Malignant Primary
- Neoplasm, neoplastic › bone (periosteum) › back NEC — Malignant Primary
- Neoplasm, neoplastic › bone (periosteum) › intervertebral cartilage or disc — Malignant Primary
- Neoplasm, neoplastic › bone (periosteum) › spine, spinal (column) — Malignant Primary
- Neoplasm, neoplastic › bone (periosteum) › vertebra (column) — Malignant Primary
- Neoplasm, neoplastic › cartilage (articular) (joint) NEC › intervertebral — Malignant Primary
- Neoplasm, neoplastic › disc, intervertebral — Malignant Primary
- Neoplasm, neoplastic › intervertebral cartilage or disc — Malignant Primary
- Neoplasm, neoplastic › nucleus pulposus — Malignant Primary
- Neoplasm, neoplastic › spine, spinal (column) — Malignant Primary
- Neoplasm, neoplastic › spine, spinal (column) › lumbosacral — Malignant Primary
- Neoplasm, neoplastic › vertebra (column) — Malignant Primary
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
MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue
ICD-9-CM equivalent
Converter →- 170.2Malignant neoplasm of vertebral column, excluding sacrum and coccyxexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about C41.2
Is C41.2 billable?
- Yes. C41.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can C41.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict C41.2 as a principal diagnosis.
Is C41.2 a CC or MCC?
- C41.2 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does C41.2 group to?
- C41.2 is used in the MS-DRG v44.0 logic for MS-DRG 456 (Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with MCC), MS-DRG 457 (Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with CC), MS-DRG 458 (Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection without CC/MCC), MS-DRG 542 (Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy with MCC), MS-DRG 543 (Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy with CC) and MS-DRG 544 (Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy 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 C41.2?
- The CMS General Equivalence Mappings map C41.2 to ICD-9-CM 170.2.