Key facts for NCD 30.6
- Benefit category
- Physicians' Services
- Effective date
- This is a longstanding national coverage determination. The effective date of this version has not been posted.
- Transmittal
- n/a
- Versions published
- 1
- Manual chapter
- 30
- NCD Manual (Pub. 100-03)
TL;DR
NCD 30.6 sets Medicare's national policy for intravenous histamine therapy under the benefit category "Physicians' Services", effective This is a longstanding national coverage determination. The effective date of this version has not been posted.. However, there is no scientifically valid clinical evidence that histamine therapy is effective for any condition regardless of the method of administration, nor is it accepted or widely used by the medical profession. Therefore, histamine therapy cannot be… It has been revised once since publication and binds every Medicare Administrative Contractor nationally.
Item or service described
The only accepted and scientifically valid medical use of histamine is diagnostic, including tests to assess:
• The ability of the stomach to secrete acid;
• The integrity of peripheral sensory nerves (e.g., in leprosy);
• The circulatory competency in limb extremities; and
• The presence of a pheochromocytoma.
Indications and limitations of coverage
However, there is no scientifically valid clinical evidence that histamine therapy is effective for any condition regardless of the method of administration, nor is it accepted or widely used by the medical profession. Therefore, histamine therapy cannot be considered reasonable and necessary, and program payment for such therapy is not made.
Text reproduced from the CMS Medicare Coverage Database record for NCD 30.6 version 1. View the original on cms.gov.
How this NCD shows up on remittances
A service denied under a National Coverage Determination returns CARC 50 (not deemed medically necessary) with remark N386 (decision based on an NCD); a denial citing a local policy instead carries N115. Because NCDs bind nationally, the appeal path is documentation that the patient meets the indications above, not a contractor-policy argument.
How QuickIntell applies NCD 30.6
QuickAuth checks the ordered service and diagnosis against NCD and LCD criteria before the encounter, QuickCode validates the diagnosis pairing on the claim, and QuickRCM routes CARC 50 denials with the policy text and the covered-code list attached so the appeal starts with evidence.
Frequently asked questions — NCD 30.6
What does NCD 30.6 cover?
However, there is no scientifically valid clinical evidence that histamine therapy is effective for any condition regardless of the method of administration, nor is it accepted or widely used by the medical profession. Therefore, histamine therapy cannot be considered reasonable and necessary, and program payment for such therapy is not made. The full indications and limitations are reproduced on this page from the CMS Medicare Coverage Database.
When did NCD 30.6 take effect?
The current version (1) is effective This is a longstanding national coverage determination. The effective date of this version has not been posted.. This is the only published version.
Does a Local Coverage Determination override NCD 30.6?
No. A National Coverage Determination binds all Medicare Administrative Contractors; an LCD can only address services or circumstances the NCD leaves open. Claims denied under this NCD typically return CARC 50 with remark N386 (NCD) rather than N115 (LCD).
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-02. Verify against the primary file before billing or contracting decisions.
- Medicare Coverage Database NCDs via the CMS Coverage APIVersion API snapshot 2026-09-27 · effective 2026-09-20 · file national-coverage-ncd.jsonSHA-256 a90fadfd264b9ef4…
Disclaimer
This page reproduces the CMS National Coverage Determination text and, for laboratory NCDs, the CMS ICD-10 edit lists, as an operational reference. Coverage decisions depend on the full policy, the claim and the contractor; nothing here is legal, clinical or billing advice. CPT codes are shown as numbers only; CPT descriptors are copyright AMA.