ICD-10-CM · Spine

M95.3

Structural deformity of the neck region that developed after birth — resulting from injury, surgery, infection, inflammatory disease, or other acquired cause — rather than being present at birth.

Verified May 8, 2026 · 5 sources ↓

Status: Billable
Chapter: 13
Related CPT: 12
Region: Spine

Drawn from CDCICD10DataAAPCCMS

Documentation tips

What should appear in the chart to support M95.3.

Source · Editorial brief grounded in 5 cited references ↓

Explicitly state that the deformity is acquired (not congenital) — the word 'acquired' or a clear etiology (e.g., post-traumatic, post-surgical, post-infectious) must appear in the note.
Identify the specific etiology when known (trauma, surgery, inflammatory disease, burn, radiation) so the deformity code can be sequenced alongside a causal code if appropriate.
Document the anatomical extent of the deformity — cervical, soft tissue, bony, or combined — to support imaging orders and distinguish from deforming dorsopathies coded under M40–M43.
Record functional impact (range-of-motion limitation, neurological involvement, cosmetic concern) to justify the level of E/M service and any associated procedures.
If imaging is ordered, ensure the note references the deformity as the indication — M95.3 is a listed covered diagnosis on CMS's LCD A57204 for cervical MRI and CT.

Related CPT procedures

Procedure codes commonly billed with M95.3. Linking the right diagnosis to the right procedure is what establishes medical necessity.

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

72141 $190.72

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

72148 $191.72

Non-contrast MRI of the lumbar spine used to evaluate disc pathology, spinal stenosis, nerve root compression, and other structural abnormalities without administration of contrast material.

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.

72052 $62.79

Radiologic examination of the cervical spine using six or more distinct views, the highest-level plain-film cervical series in the CPT spine imaging family.

72020 $23.71

Single-view radiologic examination of the spine at a specified level.

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.

70553 View procedure details

72125 View procedure details

72126 View procedure details

72127 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M95.3 and adjacent codes.

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

Assigning M95.3 when the deformity is actually a cervical kyphosis, lordosis, or scoliosis — those belong in M40–M43 (deforming dorsopathies), which are explicitly excluded from the M95 category.
Using M95.3 for a congenital neck deformity (e.g., congenital torticollis, Klippel-Feil) — congenital structural anomalies of the neck fall under Q65–Q79, not M95.3.
Defaulting to M95.9 (acquired deformity of musculoskeletal system, unspecified) when the documentation clearly identifies the neck as the affected region — M95.3 is the specific billable code and should be used when neck is documented.
Failing to code the underlying cause alongside M95.3 when etiology is known (e.g., sequela of cervical fracture requires an S-code with 7th character S), leaving the claim without full clinical context.

Clinical context

Source · Editorial summary grounded in 5 cited references ↓

M95.3 captures any documented acquired deformity of the neck, meaning the structural abnormality arose postnatally. Common clinical scenarios include post-traumatic cervical deformity (e.g., after fracture malunion), post-surgical neck deformity (e.g., following tumor excision or lymph node dissection), deformity secondary to longstanding inflammatory arthritis, or soft-tissue contracture from burns or radiation. The key differentiator is acquired origin — if the deformity is congenital, Q-codes apply instead.

M95.3 sits within the M95 category (Other acquired deformities of musculoskeletal system and connective tissue). The parent category carries Type 2 Excludes notes that push deforming dorsopathies (M40–M43) and postprocedural musculoskeletal disorders (M96.-) to their own code blocks. If the deformity is specifically a kyphosis, lordosis, or scoliosis of the cervical spine, M40–M43 is the correct range, not M95.3. Reserve M95.3 for neck deformities that don't fit those structural spinal curve categories.

CMS's LCD for MRI and CT scans of the head and neck (Article A57204) explicitly lists M95.3 as a covered diagnosis supporting medical necessity for cervical imaging — making accurate assignment of this code directly relevant to imaging authorization and reimbursement. It groups into MS-DRG 564/565/566 (Other musculoskeletal system and connective tissue diagnoses, with MCC/CC/without CC-MCC).

Sibling codes

Other billable codes under M95 (laterality / anatomic variants).

M95.8

Oth acquired deformities of musculoskeletal system

M95.0

Acquired deformity of nose

M95.2

Other acquired deformity of head

M95.9

Acquired deformity of musculoskeletal system, unspecified

M95.5

Acquired deformity of pelvis

M95.4

Acquired deformity of chest and rib

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 5 cited references ↓

01When does a cervical deformity get coded to M40–M43 instead of M95.3?

If the deformity is specifically a spinal curvature abnormality — kyphosis, lordosis, or scoliosis of the cervical spine — use M40–M43. The M95 category has a Type 2 Excludes note for deforming dorsopathies. M95.3 applies to neck deformities that are not spinal curvature disorders, such as post-traumatic bony deformity, post-surgical soft-tissue deformity, or contracture.

02Can M95.3 be used for torticollis?

Only if the torticollis is acquired and doesn't map to a more specific code. Congenital torticollis goes to Q68.0. Acquired torticollis has its own entry at M43.6 (if it's a spinal/muscle condition) or R29.891 (symptom level). Audit the documentation carefully — M95.3 is appropriate for residual structural deformity after torticollis has been treated or resolved, not for active torticollis itself.

03Does M95.3 support medical necessity for cervical MRI or CT?

Yes. CMS LCD Article A57204 (Billing and Coding: MRI and CT Scans of the Head and Neck) explicitly lists M95.3 as a covered diagnosis supporting medical necessity for cervical imaging. Ensure the order and clinical note reference the deformity as the indication.

04Should I code the cause of the deformity in addition to M95.3?

Yes, when etiology is known and codeable. If the deformity is a sequela of a prior cervical injury, assign the appropriate S-code with 7th character S alongside M95.3. If it results from a systemic inflammatory condition, code that condition as well. Sequencing follows the reason for the encounter.

05Is M95.3 laterality-specific?

No. M95.3 carries no laterality sub-classification — there is no right or left variant. The neck is treated as a single anatomical region at this code level. Document sidedness in the clinical note if relevant to the deformity, but the code itself does not differentiate.

06What MS-DRGs does M95.3 group to?

M95.3 groups to MS-DRG 564 (Other musculoskeletal system and connective tissue diagnoses with MCC), 565 (with CC), or 566 (without CC/MCC) under MS-DRG v43.0. The presence of comorbidities documented in the record directly affects which DRG tier is assigned and therefore reimbursement.

07Can M95.3 be the principal diagnosis, or is it always secondary?

M95.3 can be the principal diagnosis if the acquired neck deformity is the primary reason for the encounter — for example, a visit specifically to evaluate or treat the deformity. It is often secondary when the encounter addresses an underlying condition that caused the deformity.

Sources & references

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

Mira AI Scribe

Mira captures the acquired nature of the neck deformity, its documented etiology (trauma, surgery, infection, inflammatory disease), cervical imaging findings (alignment, bony or soft-tissue structural change), and any functional limitations — preventing a downcode to unspecified M95.9 or a misdirect to congenital Q-codes, and ensuring the record supports medical necessity for any associated cervical imaging under CMS LCD A57204.

See how Mira captures M95.3 documentation