S24.4XXA — Injury of thoracic sympathetic nervous system, initial encounter
S24.4XXA is a billable, specific ICD-10-CM code for injury of thoracic sympathetic nervous system, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category S24
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Injury of cardiac plexus
- Injury of esophageal plexus
- Injury of pulmonary plexus
- Injury of stellate ganglion
- Injury of thoracic sympathetic ganglion
Risk adjustment
S24.4XXA does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
S24.4XXA is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54969Billing and Coding: Nerve Conduction Studies and Electromyography
- A56034Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy
- A56607Billing and Coding: Continuous Peripheral Nerve Blocks (CPNB)
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
Related codes at this level
Codes that share S24.4. If S24.4XXA is not quite right, the correct code is usually one of these.
Questions about S24.4XXA
- Is S24.4XXA a billable ICD-10-CM code?
- Yes. S24.4XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S24.4XXA sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).