When is ICD-10 code M99.6 used?

Doctors, hospitals, and insurers may use ICD-10 code M99.6 when recording osseous and subluxation stenosis of intervertebral foramina in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code M99.6 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code M99.6: Osseous and subluxation stenosis of intervertebral foramina

Name: ICD-10 Code M99.6: Osseous and subluxation stenosis of intervertebral foramina
Creator: HealthAssure Clinical Team
Published: 2026-05-26T05:25:39.445Z

M99.6 is an ICD-10 diagnosis entry used to group records related to Osseous and subluxation stenosis of intervertebral foramina. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

When is it used?

May be used when a clinician documents osseous and subluxation stenosis of intervertebral foramina in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

13Diseases of the musculoskeletal system and connective tissue (M00-M99)

block

M99Biomechanical lesions, not elsewhere classified (M99)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

Orthopedic SpecialistRheumatologist

Sibling codes

M99Biomechanical lesions, not elsewhere classified M99.0Segmental and somatic dysfunction M99.1Subluxation complex (vertebral)M99.2Subluxation stenosis of neural canal M99.3Osseous stenosis of neural canal M99.4Connective tissue stenosis of neural canal M99.5Intervertebral disc stenosis of neural canal M99.7Connective tissue and disc stenosis of intervertebral foramina M99.8Other biomechanical lesions M99.9Biomechanical lesion, unspecifiedbillable

Mapped diagnoses and classifications

SNOMED_CT 203714006high

Osseous and subluxation stenosis of intervertebral foramina

Source: SNOMED International ICD-10 map

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

M99.6

Replacement codes

M99.60 — Osseous and subluxation stenosis of intervertebral foramina of head regionM99.61 — Osseous and subluxation stenosis of intervertebral foramina of cervical regionM99.62 — Osseous and subluxation stenosis of intervertebral foramina of thoracic regionM99.63 — Osseous and subluxation stenosis of intervertebral foramina of lumbar regionM99.64 — Osseous and subluxation stenosis of intervertebral foramina of sacral regionM99.65 — Osseous and subluxation stenosis of intervertebral foramina of pelvic regionM99.66 — Osseous and subluxation stenosis of intervertebral foramina of lower extremityM99.67 — Osseous and subluxation stenosis of intervertebral foramina of upper extremityM99.68 — Osseous and subluxation stenosis of intervertebral foramina of rib cageM99.69 — Osseous and subluxation stenosis of intervertebral foramina of abdomen and other regions

Common synonyms

Osseous and subluxation stenosis of intervertebral foramina

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.