# Dry ice — domestic surface — Postal shipping restrictions by item category

For Dry ice, item category is Dry ice — domestic surface; carrier is USPS; restriction type is allowed; scope is domestic mail via surface transportation; conditions is Dry ice is permitted via surface transportation; must comply with Packaging Instruction 9A, recorded from its source on 2026-08-04.

- **Item category:** Dry ice — domestic surface _(unconfirmed — we could not tie this to the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** allowed _(our reading, not quoted from the source)_
- **Scope:** domestic mail via surface transportation _(our reading, not quoted from the source)_
- **Conditions:** Dry ice is permitted via surface transportation; must comply with Packaging Instruction 9A

## What the source says

> Domestic Mail via Surface Transportation: Dry ice is permitted and must comply with Packaging Instruction 9A

## Source

- https://pe.usps.com/text/pub52/pub52c3_028.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).