S74.91XA — Injury of unspecified nerve at hip and thigh level, right leg, initial encounter
S74.91XA is a billable, specific ICD-10-CM code for injury of unspecified nerve at hip and thigh level, right leg, 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 S74
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 inherited from the categories above S74.91XA
Also inherited, and the opposite of Excludes1: these conditions are not part of S74.91XA, but a patient can have both, so you may code both.
Risk adjustment
S74.91XA 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
S74.91XA is named in 13 Medicare coverage policies — 13 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53065Billing and Coding: Outpatient Physical Therapy
- 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)
Code history
S74.91XA has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share S74.91. If S74.91XA is not quite right, the correct code is usually one of these.
Questions about S74.91XA
- Is S74.91XA a billable ICD-10-CM code?
- Yes. S74.91XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S74.91XA sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the hip and thigh (S70-S79).