MCMCB Pro
S34.4XXA

S34.4XXAInjury of lumbosacral plexus, initial encounter

Billable / specific codeICD-10-CM

S34.4XXA is a billable, specific ICD-10-CM code for injury of lumbosacral plexus, 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 S34

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

S34.4XXA 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

S34.4XXA is named in 17 Medicare coverage policies 17 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • 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)

Related codes at this level

Codes that share S34.4. If S34.4XXA is not quite right, the correct code is usually one of these.

Questions about S34.4XXA

Is S34.4XXA a billable ICD-10-CM code?
Yes. S34.4XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S34.4XXA sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.