---
title: 642 Interpreter
description: "## Interpreter (642) ##### Service Code Definition: A regional center shall classify a vendor as an interpreter if the vendor demonstrates: (A) Fluency in both English and in sign language; and (B) Proficiency in facilitating communication between hearing-impaired and hearing…"
url: "https://completeguidetosdp.org/docs/642-interpreter/"
updated: "2026-06-22"
category: Traditional Service Codes
tags:
  - Traditional Services
---

# 642 Interpreter

## Interpreter (642)

##### Service Code Definition:

A regional center shall classify a vendor as an interpreter if the vendor demonstrates:

(A) Fluency in both English and in sign language; and

(B) Proficiency in facilitating communication between hearing-impaired and hearing persons using American sign language and spoken language.