ICD-10 S46.812A
Billable / SpecificStrain of other muscles, fascia and tendons at shoulder and upper arm level, left arm, initial encounter
About ICD-10-CM S46.812A
ICD-10-CM code S46.812A represents Strain of other muscles, fascia and tendons at shoulder and upper arm level, left arm, initial encounter. This is a billable/specific code in the Injury, Poisoning, and External Causes chapter (block S46). The 2026 edition of ICD-10-CM S46.812A became effective on October 1, 2025.
Coding Tips for S46.812A
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
Injury codes require a 7th character: A (initial encounter, active treatment), D (subsequent, healing/recovery), S (sequela, late effect of original injury). Codes with fewer than 6 characters need the placeholder X to bring them to 6 characters before adding the 7th. Wrong or missing 7th character is the #1 cause of injury claim denials.
Medicare LCD Coverage for S46.812A
Local Coverage Determinations (LCDs) from CMS MACs that list S46.812A as a covered diagnosis.
Showing top 10 of 198 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing S46.812A.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with S46.812A
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert S46.812A to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| S46.812A | 8408 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
ICD-10 S46.812A, Billing FAQ
Is ICD-10 code S46.812A billable? +
Yes, S46.812A is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does S46.812A map to? +
Per CMS GEMs, S46.812A maps to ICD-9 codes: 8408. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on April 20, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team