PSC N099

Overview

The Product Service Code (PSC) framework standardizes how the U.S. federal government classifies goods and services procured through contract actions. PSC values populate FPDS data element 8A to indicate “what” was purchased, improving spend visibility, reporting, and category management. The PSC Manual documents maintenance, assignment procedures, and reporting conventions for PSC values; it lists the N‑series service codes for equipment installation and identifies N099 as the miscellaneous installation entry. ¹

See also on G2X:

• G2X — PSC N099 overview
• G2X — PSC N061 overview
• G2X — PSC N059 overview

What this PSC covers

• Miscellaneous equipment installation services — Not specified by official sources ¹.
• On‑site installation labor for equipment not otherwise categorized — Not specified by official sources ¹.
• Temporary site preparation or hookups tied to equipment placement — Not specified by official sources ¹.
• Coordination and field assembly of non‑standard equipment items — Not specified by official sources ¹.
• Work that does not fit other N‑category installation PSCs (catch‑all) — Not specified by official sources ¹.

(Note: the PSC Manual lists N099 as "Installation of Equipment‑ Miscellaneous" without an itemized list of included activities.) ¹

Related NAICS and PSC codes

Official, itemized PSC↔NAICS crosswalk entries specific to PSC N099 are not provided in the published PSC Manual PDF; the Manual package and associated spreadsheets are the authoritative sources for crosswalks and mapping guidance. Because the manual treats N099 as a catch‑all, explicit NAICS mappings for every possible use are not enumerated in the PDF view. ¹

FPDS coding and use

Agencies record PSC values in FPDS data element 8A; reporters should select the PSC that best represents the predominant product or service on each contract action. The PSC Manual emphasizes use of the predominant product/service when multiple items are present. ¹

FPDS search tools support queries by PSC to identify historical contract actions and dollar spend tied to a PSC value. For operational guidance on FPDS searches, reporting filters, and how to interpret FPDS outputs, consult the FPDS help and documentation. ²

Frequently asked questions

• Q: What exactly does PSC N099 mean on a contract?
  A: N099 is the PSC Manual entry for Installation of Equipment‑ Miscellaneous and serves as a catch‑all installation service code when no more specific N‑code applies. The Manual lists the code but does not provide a detailed itemized list of covered activities. ¹

• Q: When should agencies choose N099 versus another N‑installation code?
  A: Agencies should choose the PSC that most closely represents the predominant installation activity on the contract. Use N099 when the installation work cannot be accurately assigned to a more specific N‑series code. Follow the predominant‑product/service rule in the PSC Manual. ¹

• Q: Is there a published PSC→NAICS crosswalk for N099?
  A: The PSC Manual package on acquisition.gov contains spreadsheets and change logs, but the PDF view does not publish a verified, itemized PSC→NAICS mapping specifically for N099. Interested users should consult the downloadable spreadsheets in the Manual package for crosswalk data. ¹

• Q: How should I search FPDS to find actions coded to N099?
  A: Use FPDS search filters to constrain results by PSC (data element 8A) and apply date, agency, and award type filters as needed. FPDS help offers step‑by‑step instructions for ezSearch and data export options to analyze spend by PSC. ²

Useful resources

• G2X — PSC N099 (code overview)
• PSC Manual (full document and spreadsheets) ¹
• FPDS help and search guidance (FPDS ezSearch / help index) ²

References

1. Product and Service Code (PSC) Manual, Acquisition.gov (PSC Manual April 2025 PDF). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf

2. FPDS Help — FPDS Help Index, FPDS.gov. https://www.fpds.gov/help/index.jsp