ICD-10-CM · Spine

M50.93

M50.93 identifies a cervical disc disorder of unspecified type located at the cervicothoracic region (C7-T1 junction), where the nature of the disc pathology — degeneration, displacement, myelopathy, or radiculopathy — has not been specified in the clinical documentation.

Verified May 8, 2026 · 4 sources ↓

Status: Billable
Chapter: 13
Related CPT: 15
Region: Spine

Drawn from CDCCMSICDAAPC

Documentation tips

What should appear in the chart to support M50.93.

Source · Editorial brief grounded in 4 cited references ↓

Explicitly document the spinal level as C7-T1 or 'cervicothoracic region' — generic terms like 'lower cervical' do not map cleanly to M50.93 versus M50.92.
If imaging has been reviewed, document the disc finding type (degeneration, herniation, annular tear, etc.) — this is what separates M50.93 from more specific codes like M50.03, M50.13, or M50.23.
Record associated neurological symptoms (arm pain, paresthesia, weakness, hyperreflexia) in the physical exam; their presence obligates a more specific code and prevents audit exposure from an 'unspecified' assignment.
Note whether imaging is pending or has been ordered — this contextualizes why the 'unspecified' code is appropriate at this encounter rather than appearing as a documentation gap.
If a symptom code such as M54.2 (cervicalgia) is coded alongside M50.93, confirm it adds clinical value not already integral to the disc disorder code.

Related CPT procedures

Procedure codes commonly billed with M50.93. Linking the right diagnosis to the right procedure is what establishes medical necessity.

Source · CMS LCDs · AAOS specialty guidance · claims-pattern analysis

99213 $95.19

Established patient office or outpatient visit requiring 20–29 minutes of total time or low-complexity medical decision-making.

99214 $135.61

Office visit for an established patient requiring moderate-complexity medical decision making (MDM), or 30–39 minutes of total provider time on the date of service.

99215 $192.39

Highest-level office or outpatient E/M visit for an established patient, qualifying via high-complexity medical decision making or 40–54 minutes of total provider time on the date of service.

72141 $190.72

MRI of the cervical spinal canal and its contents performed without contrast material.

72040 $39.75

Radiologic examination of the cervical spine capturing two or three views (e.g., AP, lateral, oblique).

72050 $55.11

Radiologic examination of the cervical spine capturing a minimum of four views, used to evaluate alignment, fractures, degeneration, or other structural pathology of the neck.

63020 $1,064.15

Laminotomy at a single cervical interspace with nerve root decompression, including partial facetectomy, foraminotomy, and/or herniated disc excision — open or endoscopic approach.

63045 $1,249.53

Open cervical laminectomy with facetectomy and foraminotomy at a single vertebral level to decompress nerve roots or the spinal cord.

22551 $1,604.91

Anterior cervical discectomy and fusion (ACDF) at a single interspace, performed through a front-of-neck approach with removal of disc material and arthrodesis of adjacent vertebral bodies.

22554 $1,215.79

Anterior interbody arthrodesis of the cervical spine below C2, performed via anterior approach with minimal diskectomy to prepare the interspace for fusion — not performed for decompression purposes.

97110 $29.06

Therapeutic exercise billed per 15-minute unit, targeting strength, endurance, range of motion, or flexibility with direct one-on-one patient contact.

72142 View procedure details

72156 View procedure details

62321 View procedure details

97014 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M50.93 and adjacent codes.

Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓

Defaulting to M50.93 when imaging has already confirmed the pathology type — once myelopathy, radiculopathy, or disc displacement is documented, the 'unspecified' code is no longer appropriate and should be replaced with M50.03, M50.13, or M50.23 respectively.
Confusing cervicothoracic (C7-T1, coded with 5th character '3') with mid-cervical (C4-C6, 5th character '2') — documentation must specify the level; do not infer from clinical presentation alone.
Using M50.90 (unspecified cervical region) when the provider has documented the C7-T1 level — M50.93 is the correct choice when the region is known but the pathology type is not.
Failing to update M50.93 to a more specific M50 code at a subsequent encounter after imaging results are available — leaving the 'unspecified' code in place post-imaging is an audit flag.
Omitting a laterality-specific or symptom code when radicular symptoms are present — M50.93 does not capture sided radiculopathy; if radiculopathy is confirmed, M50.13 with appropriate symptom coding applies.

Clinical context

Source · Editorial summary grounded in 4 cited references ↓

Use M50.93 only when the documentation confirms the cervicothoracic region (C7-T1) as the affected level but does not specify the disc pathology type. The cervicothoracic region is a distinct anatomical zone in ICD-10-CM's M50 hierarchy, separate from the mid-cervical region (M50.x2) and the occipito-atlanto-axial region (M50.x1). If the provider documents myelopathy at this level, use M50.03 instead; radiculopathy maps to M50.13; disc displacement maps to M50.23; and other specified cervical disc disorders at this level map to M50.83.

M50.93 sits under parent code M50.9 (Cervical disc disorder, unspecified) and is the most specific code available when pathology type is genuinely undetermined at the cervicothoracic junction. It is not a fallback for incomplete documentation — it is appropriate only when clinical findings or imaging point to disc-level pathology at C7-T1 but the encounter does not yet support a more definitive characterization. The CMS ICD-10 Clinical Concepts for Orthopedics document notes that codes with a greater degree of specificity should be considered first.

In orthopedic and spine practices, M50.93 commonly appears during initial evaluations, pre-imaging workups, or when imaging is ordered but results are pending. Once imaging returns and the pathology is characterized, the code should be updated to the appropriate M50 subcategory. Pairing this code with a symptom code (e.g., M54.2 cervicalgia) is appropriate when the symptom provides additional clinical specificity not captured by the disc disorder code alone.

Inclusion & exclusion notes

Per the official ICD-10-CM Tabular List.

Source · CDC ICD-10-CM Official Tabular List · 2026

Includes

C7-T1 cervical disc disorder, unspecified

Sibling codes

Other billable codes under M50.9 (laterality / anatomic variants).

M50.91

Cervical disc disorder, unspecified, high cervical region

M50.90

Cervical disc disorder, unsp, unspecified cervical region

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 4 cited references ↓

01When is M50.93 the right code versus M50.03 or M50.13?

Use M50.93 only when the cervicothoracic level is documented but the disc pathology type is not yet determined. If the provider documents myelopathy, use M50.03. If radiculopathy is confirmed, use M50.13. M50.93 is a placeholder for uncharacterized pathology — not a catch-all.

02What anatomical level does 'cervicothoracic region' refer to in ICD-10-CM?

In ICD-10-CM, the cervicothoracic region corresponds to the C7-T1 intervertebral disc level. The 5th character '3' in the M50 category consistently denotes this junction across all M50 subcategories.

03Can M50.93 be coded alongside a symptom code like M54.2?

Yes, if the symptom code provides clinically distinct information not already captured by the disc disorder code. Cervicalgia (M54.2) may accompany M50.93 when neck pain is a separately documented complaint. Verify the ICD-10-CM tabular excludes notes before assigning both.

04Is M50.93 valid for an initial evaluation encounter before MRI results are available?

Yes. M50.93 is appropriate at an initial encounter when clinical findings point to a cervicothoracic disc disorder but imaging has not yet characterized the pathology. Update the code at a subsequent encounter once the disc pathology type is established.

05Does M50.93 require a 7th character extension?

No. M-codes do not use 7th-character extensions. The 7th-character A/D/S convention applies to S-code injury codes only. M50.93 is complete as a 5-character code.

06What is the difference between M50.93 and M50.90?

M50.90 is used when neither the cervical region level nor the pathology type is specified. M50.93 is more specific — the cervicothoracic region (C7-T1) is documented, but the disc disorder type is not. Always choose M50.93 over M50.90 when the provider has identified the C7-T1 level.

07Is M50.93 appropriate for degenerative disc disease at C7-T1?

Only if the provider's documentation uses a non-specific term that does not map to degeneration or another defined pathology. If the provider explicitly documents 'degenerative disc disease' or 'disc degeneration' at C7-T1, review whether M50.83 (other cervical disc disorders, cervicothoracic region) is the more accurate code.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

01CDC ICD-10-CM Tabular List 2026 — http://stacks.cdc.gov/view/cdc/250974
02CMS ICD-10 Clinical Concepts for Orthopedics — https://www.cms.gov/medicare/coding/icd10/downloads/icd10clinicalconceptsorthopedics1.pdf
03ICD-10-CM Official Guidelines for Coding and Reporting FY2026 — https://stacks.cdc.gov/view/cdc/250974/cdc_250974_DS1.pdf
04AAPC Codify — M50.93 — https://www.aapc.com/codes/icd-10-codes/M50.93

Mira AI Scribe

Mira captures the documented spinal level (C7-T1 or cervicothoracic), the type of disc pathology if stated, any associated neurological findings, and whether imaging is pending or reviewed. This prevents a premature 'unspecified' assignment when a more specific M50 code is supported, and flags encounters where the code should be revisited once radiology results return.

See how Mira captures M50.93 documentation