HCPCS
HCPCS Code J3420: Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg
Reviewed by HealthAssure Clinical TeamUpdated 22 May 2026
What is this code?
HCPCS codes are used to standardize how healthcare services, supplies, equipment, transportation, and certain procedures are documented and billed. Coverage indicator: D.
When is it used?
- Used in procedure coding, claims, and care documentation.
- Coverage code: D
- Pricing indicator: 51
What it does not mean
- The presence of a procedure code does not by itself explain why a service was needed or whether it was appropriate in a specific case.
Where you may see this code
You may see this code on claims, billing records, explanations of benefits, preauthorization paperwork, or procedure documentation.
Coverage-related procedures and services
ICD10 T50.995Ahigh
Adverse effect of other drugs, medicaments and biological substances, initial encounter
Source: CMS coverage guidance
ICD10 T50.995Shigh
Adverse effect of other drugs, medicaments and biological substances, sequela
Source: CMS coverage guidance
ICD10 T50.995Dhigh
Adverse effect of other drugs, medicaments and biological substances, subsequent encounter
Source: CMS coverage guidance
ICD10 K86.0high
Alcohol-induced chronic pancreatitis
Source: CMS coverage guidance
ICD10 K90.0high
Celiac disease
Source: CMS coverage guidance
ICD10 K29.40high
Chronic atrophic gastritis without bleeding
Source: CMS coverage guidance
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from HCPCS. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.