🧬 ICD-10 CM S14.115A — Complete Lesion At C5 Level Of Cervical Spinal Cord, Initial Encounter
Billable Code Confirmed
ICD-10 CM S14.115A is a complete, 7-character code combining the base category (S14.115), and the 7th character “A” for initial encounter, making it fully billable and reportable for reimbursement.
Non-Billable Parent Codes
S14.11 (Complete lesion of cervical spinal cord) is non-billable because it lacks the required level specificity down to C5. S14.115 alone is also non-billable since it omits the mandatory 7th character encounter designation.
Clinical Context
Selection of this code depends on documented complete interruption of neural transmission at the C5 spinal cord level, as opposed to an incomplete lesion where some function is preserved below the injury.
Code Classification
This is a diagnosis code (ICD-10-CM), not a procedure code, and it specifically classifies the anatomic level and completeness of a traumatic spinal cord injury.
🔍 Code Description
ICD-10 CM S14.115A describes a complete traumatic lesion of the spinal cord at the C5 vertebral level, meaning there is total interruption of neural conduction below this point, resulting in complete tetraplegia. This differs meaningfully from an S14.116A-type incomplete lesion, where partial motor or sensory function remains distal to the injury. The C5 level is clinically significant because it typically preserves shoulder shrug and elbow flexion via C5 myotome function while eliminating wrist extension, hand function, and trunk/lower extremity control entirely.
Documentation must clearly establish “complete” versus “incomplete” lesion status, often based on standardized exams such as the ASIA Impairment Scale, since this distinction drives both code selection and HCC risk adjustment. The 7th character “A” designates the initial encounter, used while the patient is receiving active treatment for the condition, such as during the acute hospitalization or initial surgical stabilization. Associated injuries like cervical vertebral fractures are coded separately per the “code also” instruction rather than being bundled into this single code.
🌳 Code Tree / Hierarchy
S14 Injury of nerves and spinal cord at neck level ❌ Non-billable
│
├── S14.0 Concussion and edema of cervical spinal cord ❌ Non-billable
├── S14.1 Other and unspecified injury of cervical spinal cord ❌ Non-billable
│ │
│ ├── S14.11 Complete lesion of cervical spinal cord ❌ Non-billable
│ │ │
│ │ ├── S14.114A Complete lesion at C4 level, initial encounter ✅ Billable
│ │ ├── S14.115A Complete lesion at C5 level, initial encounter ◀ THIS CODE ✅ Billable
│ │ └── S14.116A Complete lesion at C6 level, initial encounter ✅ Billable
│ │
│ └── S14.12 Central cord syndrome of cervical spinal cord ❌ Non-billable
│
└── S14.2 Injury of nerve root of cervical spine ❌ Non-billable
Level Specificity Drives Severity Coding
Choosing S14.115A over the non-billable parent S14.11 is essential because payers and rehab facilities use the specific vertebral level to determine expected functional prognosis and appropriate DRG/HCC mapping.
Tip
Always confirm the 7th character matches the encounter type; using “A” for a follow-up rehab visit instead of “D” (subsequent encounter) is a frequent coding error in this code family.
✅ Includes
- Complete transection or crush injury of the spinal cord specifically localized to the C5 segment.
- Complete traumatic tetraplegia/quadriplegia attributable to a C5-level injury.
❌ Excludes
Excludes 1
ICD-10 CM S14.116A — Incomplete lesion at C5 level of cervical spinal cord is excluded here because it represents preserved neurologic function below the injury level, which is clinically and functionally distinct from a complete lesion.
Danger
The most common Excludes 1 error is coding both the complete and incomplete lesion codes together when documentation is ambiguous about completeness — coders must query the provider rather than defaulting to one or the other.
Excludes 2
No Excludes 2 notes are listed for this code per the official ICD-10-CM tabular index.
📋 Clinical Overview
Complete Vs Incomplete C5 Lesion
The core clinical distinction coders must verify is whether any motor or sensory function persists below the C5 level, since this determines whether S14.115A or an incomplete-lesion code applies.
| Feature | S14.115A | S14.116A |
|---|---|---|
| Lesion completeness | No motor/sensory function below C5 | Partial function preserved below C5 |
| Functional impact | Complete tetraplegia, ventilator dependence common | Variable, often better prognosis for partial recovery |
| HCC mapping | HCC 71 (Quadriplegia) | Also maps to HCC 71 but often with lower resource utilization |
Important
A CDI trigger should fire whenever documentation says “spinal cord injury at C5” without specifying complete versus incomplete, since this materially changes code selection and RAF weight.
Manifestations & Symptom Burden
- Complete loss of voluntary motor function in the trunk, legs, and most hand/finger movement.
- Preserved shoulder shrug and partial elbow flexion due to intact C5 myotome innervation.
- Loss of bowel and bladder control requiring neurogenic bladder management.
- High risk of respiratory compromise due to loss of intercostal muscle innervation.
- Autonomic dysreflexia risk in the acute and chronic phases.
Tip
Code each manifestation separately (e.g., neurogenic bladder, respiratory failure) rather than assuming they are automatically captured under S14.115A, since ICD-10-CM does not combine these into the spinal cord injury code itself.
💰 HCC Risk Adjustment
ICD-10 CM S14.115A maps to HCC 71 (Quadriplegia) under the CMS-HCC model, carrying substantial RAF weight due to the severe, permanent nature of complete tetraplegia. This diagnosis must be re-documented and coded at least once per calendar year in the outpatient or inpatient setting to remain active for risk adjustment purposes, since HCCs reset annually. Payers frequently audit this code family for supporting clinical documentation confirming lesion completeness.
🏥 MS-DRG Assignment
When principal, S14.115A groups to MDC 01, with DRG assignment (052/053/054) driven by presence of CC/MCC such as respiratory failure or pressure ulcers. Coders should sequence any associated cervical vertebral fracture as a secondary diagnosis per the “code also” instruction rather than as principal, since the spinal cord injury is typically the reason for admission and drives resource intensity.
🔗 Related ICD-10-CM Codes
Same category (siblings): S14.114A, S14.115A, S14.116A
Associated injury codes: S12.000A (fracture of C1 vertebra), S12.100A (fracture of C2 vertebra), R29.5 (transient paralysis)
🛠️ Commonly Associated CPT Codes
- 63001 — Laminectomy for spinal cord decompression, cervical; commonly reported for surgical stabilization following complete C5 lesion.
- 22551 — Anterior cervical discectomy and fusion, C5-C6 level; frequently bundled with instrumentation codes.
- 22845 — Anterior instrumentation, cervical spine; reported when hardware is placed for stabilization.
- 31500 — Emergency intubation; often used acutely given respiratory compromise risk at this level.
NCCI Bundling Considerations
CPT codes for decompression and instrumentation are frequently bundled under NCCI edits when performed at the same spinal level during the same operative session, requiring appropriate modifier use (e.g., modifier -59 or -XS) when separately reportable. Coders should verify column 1/column 2 edit pairs before unbundling any spinal fusion and decompression combination.
🔬 ICD-10-PCS Crosswalk
- 00N30ZZ — Release cervical spinal cord, open approach; used for surgical decompression procedures.
- 0RG10A0 — Fusion of cervical vertebral joint with autograft, open approach; reported for stabilization surgery following the injury.
💊 Coding Scenarios and Examples
Scenario 1: A 24-year-old male presents after a diving accident with complete loss of motor and sensory function below C5, confirmed on ASIA exam. Correct coding: S14.115A as principal diagnosis. Sequencing places the spinal cord injury first since it is the primary reason for admission, with any vertebral fracture coded additionally per “code also.”
Scenario 2: Same patient returns two months later for continued inpatient rehabilitation for the same complete C5 lesion. Correct coding: S14.115D (subsequent encounter), not S14.115A, since active acute treatment has concluded and the patient is now in routine healing/rehab phase.
Scenario 3: Documentation states “spinal cord injury at C5” without specifying completeness. CDI note: A query should be issued to clarify complete versus incomplete lesion before finalizing between S14.115A and S14.116A, since this materially affects HCC and DRG assignment.
⚠️ Coding Pitfalls and Tips
- Never assign S14.115A past the acute/initial treatment phase; switch to the “D” (subsequent) 7th character once active treatment ends.
- Always query for lesion completeness when documentation is ambiguous rather than defaulting to S14.115A or S14.116A.
- Remember to code associated cervical vertebral fractures separately using S12 category codes per the “code also” instruction.
- Capture all manifestations (neurogenic bladder, respiratory failure) as additional diagnoses since they are not bundled into S14.115A.
- Re-document this diagnosis annually to maintain HCC 71 capture for risk adjustment continuity.
Sources: 1. AAPC Codify, S14.115A — aapc.com/codes/icd-10-codes/S14.115A · 2. ICDList, S14.115A — icdlist.com/icd-10/S14.115A · 3. ICDList, S14.11 — icdlist.com/icd-10/S14.11 · 4. AAPC Codify, S14.115 — aapc.com/codes/icd-10-codes/S14.115 · 5. Unbound Medicine ICD-10-CM Reference — unboundmedicine.com