Skip to main content

M47.012 ICD-10-CM Code: Anterior spinal artery compression syndromes, cervical region

Compare with another code for M47.012Check this code on a claim

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
2 inclusion terms

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too, and is marked with where it comes from.

Includesfrom M47What M47 covers
  • arthrosis or osteoarthritis of spine
  • degeneration of facet joints

Where it sits Source: CMS/NCHS

Under:Chapter 13: Diseases of the Musculoskeletal System and Connective TissueM40-M54 DorsopathiesM45-M49 SpondylopathiesM47 SpondylosisM47.0 Anterior spinal and vertebral artery compression syndromesM47.01 Anterior spinal artery compression syndromes

CompareCheck ClaimView Related Codes

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 551 — MEDICAL BACK PROBLEMS WITH MCC (MDC 08)
  • MS-DRG 552 — MEDICAL BACK PROBLEMS WITHOUT MCC (MDC 08)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for M47.012 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on M47.012 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • arthrosis or osteoarthritis of spine
  • degeneration of facet joints

Source: inherited from M47

Don’t confuse M47.012 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of M47.012 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • M47.019— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Anterior spinal artery compression syndromes, site unspecified” takes M47.019; specificity in the record moves it back here.

    Full comparison: M47.012 vs M47.019 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Anterior spinal artery compression syndromes, cervical region is a billable ICD-10-CM diagnosis code (M47.012).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Verify Before Coding

  • CC as a secondary diagnosis (FY2027). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name M47.012 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 3 Excludes1 notes: G54 — Nerve root and plexus disorders (via M47.-), G55 — Nerve root and plexus compressions in diseases classified elsewhere (via M47.0.-), G99.2 — Myelopathy in diseases classified elsewhere (via M47.0.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 13 Excludes2 notes: M15 — Polyosteoarthritis (via M47.-), M15-M19 — Osteoarthritis (M15-M19) (via M47.-), M16 — Osteoarthritis of hip (via M47.-), M17 — Osteoarthritis of knee (via M47.-), M18 — Osteoarthritis of first carpometacarpal joint (via M47.-), M19 — Other and unspecified osteoarthritis (via M47.-), M20 — Acquired deformities of fingers and toes (via M47.-), M20-M25 — Other joint disorders (M20-M25) (via M47.-), M21 — Other acquired deformities of limbs (via M47.-), M22 — Disorder of patella (via M47.-), M23 — Internal derangement of knee (via M47.-), M24 — Other specific joint derangements (via M47.-), M25 — Other joint disorder, not elsewhere classified (via M47.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 22 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 2 MS-DRGs: DRG 551 (MDC 08), DRG 552 (MDC 08).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):MUS011 — Spondylopathies/spondyloarthropathy (including infective) (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

M47.011 — Anterior spinal artery compression syndromes, occipito-atlanto-axial region, M47.013 — Anterior spinal artery compression syndromes, cervicothoracic region, M47.014 — Anterior spinal artery compression syndromes, thoracic region, M47.015 — Anterior spinal artery compression syndromes, thoracolumbar region, M47.016 — Anterior spinal artery compression syndromes, lumbar region, M47.019 — Anterior spinal artery compression syndromes, site unspecified, M47.021 — Vertebral artery compression syndromes, occipito-atlanto-axial region, M47.022 — Vertebral artery compression syndromes, cervical region, M47.029 — Vertebral artery compression syndromes, site unspecified, M47.11 — Other spondylosis with myelopathy, occipito-atlanto-axial region, M47.12 — Other spondylosis with myelopathy, cervical region, M47.13 — Other spondylosis with myelopathy, cervicothoracic region, M47.21 — Other spondylosis with radiculopathy, occipito-atlanto-axial region, M47.22 — Other spondylosis with radiculopathy, cervical region, M47.23 — Other spondylosis with radiculopathy, cervicothoracic region, M47.811 — Spondylosis without myelopathy or radiculopathy, occipito-atlanto-axial region, M47.812 — Spondylosis without myelopathy or radiculopathy, cervical region, M47.813 — Spondylosis without myelopathy or radiculopathy, cervicothoracic region, M47.891 — Other spondylosis, occipito-atlanto-axial region, M47.892 — Other spondylosis, cervical region, +1 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Spondylopathies/spondyloarthropathy (including infective)).

+361 more

Contextual Map

Every relationship of M47.012 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run M47.012 with these 11 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes (13)

Clinical classification (CCSR)

MS-DRG Grouper

  • CC — Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (CC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2027
  • DRG 551 — MEDICAL BACK PROBLEMS WITH MCC[MS-DRG]: “MEDICAL BACK PROBLEMS WITH MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
  • DRG 552 — MEDICAL BACK PROBLEMS WITHOUT MCC[MS-DRG]: “MEDICAL BACK PROBLEMS WITHOUT MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2027

MDC crossing

  • MDC 08 — Diseases and Disorders of the Musculoskeletal System and Connective Tissue[MDC crossing]: “Diseases and Disorders of the Musculoskeletal System and Connective Tissue — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 18,439 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Syndrome, anterior, spinal artery, compression, cervical region[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (40)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed Clinical Terms (1)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder-derived relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder editorial explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "M47.012 — Anterior spinal artery compression syndromes, cervical region." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/m47.012-anterior-spinal-artery-compression-syndromes-cervical-region

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Anterior spinal artery compression syndromes, cervical region

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to M47.012 in its code family, with their registry titles.

View all codes in the M47 family