20 CFR § 30.910 - Will an impairment that cannot be assigned a numerical percentage using the AMA's Guides be included in the impairment rating?

---
identifier: "/us/cfr/t20/s30.910"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 30.910 - Will an impairment that cannot be assigned a numerical percentage using the AMA's Guides be included in the impairment rating?"
title_number: 20
title_name: "Employees' Benefits"
section_number: "30.910"
section_name: "Will an impairment that cannot be assigned a numerical percentage using the AMA's Guides be included in the impairment rating?"
chapter_name: "OFFICE OF WORKERS' COMPENSATION PROGRAMS, DEPARTMENT OF LABOR"
subchapter_number: "C"
subchapter_name: "ENERGY EMPLOYEES OCCUPATIONAL ILLNESS COMPENSATION PROGRAM ACT OF 2000"
part_number: "30"
part_name: "CLAIMS FOR COMPENSATION UNDER THE ENERGY EMPLOYEES OCCUPATIONAL ILLNESS COMPENSATION PROGRAM ACT OF 2000, AS AMENDED"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 301; 31 U.S.C. 3716 and 3717; 42 U.S.C. 7384d, 7384t, 7384u and 7385s-10; Executive Order 13179, 65 FR 77487, 3 CFR, 2000 Comp., p. 321; Secretary of Labor's Order No. 10-2009, 74 FR 58834."
regulatory_source: "71 FR 78534, Dec. 29, 2006, unless otherwise noted."
cfr_part: "30"
---


# 30.910 Will an impairment that cannot be assigned a numerical percentage using the AMA's Guides be included in the impairment rating?

(a) An impairment of an organ or body function that cannot be assigned a numerical impairment percentage using the AMA's *Guides* will not be included in the employee's impairment rating.

(b) A mental impairment that does not originate from a documented physical dysfunction of the nervous system, and cannot be assigned a numerical percentage using the AMA's *Guides*, will not be included in the impairment rating for the employee. Mental impairments that are due to documented physical dysfunctions of the nervous system can be assigned numerical percentages using the AMA's *Guides* and will be included in the rating.