42 CFR § 426.300 - Review of LCDs, NCDs, and deemed NCDs.

---
identifier: "/us/cfr/t42/s426.300"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 426.300 - Review of LCDs, NCDs, and deemed NCDs."
title_number: 42
title_name: "Public Health"
section_number: "426.300"
section_name: "Review of LCDs, NCDs, and deemed NCDs."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "426"
part_name: "REVIEW OF NATIONAL COVERAGE DETERMINATIONS AND LOCAL COVERAGE DETERMINATIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Secs. 1102 and 1871 of the Social Security Act (42 U.S.C. 1302 and 1395hh)"
regulatory_source: "68 FR 63716, Nov. 7, 2003, unless otherwise noted."
cfr_part: "426"
---


# 426.300 Review of LCDs, NCDs, and deemed NCDs.

(a) Upon the receipt of an acceptable LCD complaint as described in § 426.400, an ALJ conducts a review of a challenged provision (or provisions) of an LCD using the reasonableness standard.

(b) Upon the receipt of an acceptable NCD complaint as described in § 426.500, the Board conducts an NCD review of a challenged provision (or provisions) of an NCD using the reasonableness standard.

(c) The procedures established in this part governing the review of NCDs also apply in cases in which a deemed NCD is challenged.