S9990Temporary National Codes (Non-Medicare)

Services provided as part of a phase ii clinical trial

Short description: Services provided as part of

Effective date
January 1, 2000
Termination date

Related codes (S-series)

Frequently asked questions

What is HCPCS code S9990?

S9990 is a HCPCS Level II code for Services provided as part of a phase ii clinical trial.

What category is HCPCS code S9990 in?

S9990 falls under the Temporary National Codes (Non-Medicare) category of HCPCS Level II.

When did HCPCS code S9990 become effective?

S9990 has been effective since January 1, 2000, per CMS's quarterly HCPCS update.

HCPCS Level II data from CMS (public domain). HCPCS Level I (CPT) codes are not included — CPT is copyrighted by the American Medical Association. Always verify codes with authoritative sources before making coding or billing decisions.