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LCD L33446: Respiratory Therapy and Oximetry Services

LCD L33446, Respiratory Therapy and Oximetry Services, is the Local Coverage Determination that Palmetto GBA applies to claims from 7 states (AL, GA, NC, SC, TN, VA, WV), effective 2021-06-24 and first in force 2015-10-01. The policy text runs 398 words, and its billing and coding article A56730 lists 318 ICD-10-CM codes that support medical necessity for 8 procedure codes. No other contractor publishes a policy with this title.

QuickIntell editorial content · Legacy registry date · Review not verified

Data effective
Data currency: Medicare Coverage Database LCD export release of September 24, 2026 (effective September 20, 2026). Next CMS release: weekly (Thursdays) for the MCD.
Contractor
Palmetto GBA
States and territories
7
AL GA NC SC TN VA WV
Revision effective
2021-06-24
Original effective
2015-10-01
Policy text
398 words
Covered ICD-10 codes (articles)
318

Where this LCD applies

Each contract number is a jurisdiction on the remittance; the policy binds claims processed under these contracts and no others.

Contracts that apply LCD L33446
ContractContractorTypeStates
11202Palmetto GBAA and B and HHH MACSC
11302Palmetto GBAA and B and HHH MACVA
11402Palmetto GBAA and B and HHH MACWV
11502Palmetto GBAA and B and HHH MACNC
10112Palmetto GBAA and B MACAL
10212Palmetto GBAA and B MACGA
10312Palmetto GBAA and B MACTN

Billing and coding: diagnoses and procedure codes

Since 2019 the codes live in the companion article rather than the LCD. Billing and Coding A56730 (Billing and Coding: Respiratory Therapy and Oximetry Services) carries the diagnosis and procedure lists the contractor loads as the claims edit. CPT codes are shown as bare numbers because the descriptors are licensed by the AMA; HCPCS Level II descriptors are public and shown.

A56730: Billing and Coding: Respiratory Therapy and Oximetry Services (Billing and Coding, effective 2026-01-01)

Covered ICD-10-CM codes
318
2 groups
Non-covered ICD-10-CM codes
0
Procedure codes listed
8
Full article
cms.gov record
First 24 covered ICD-10-CM codes in A56730
ICD-10-CMDescription (FY2027)
A15.0—
A22.1—
A37.01—
A37.11—
A37.81—
A37.91—
A48.1—
B25.0—
B44.0—
B77.81—
C34.11—
C34.12—
C34.2—
C34.31—
C34.32—
C34.80—
C34.81—
C34.82—
C34.91—
C34.92—
C38.4—
C45.0—
C78.01—
C78.02—

Procedure codes: 31720, 94640, 94664, 94760, 94761, 94762, 99291, 99292.

Coverage indications, limitations and medical necessity

Respiratory therapy services provided in a facility are usually the responsibility of the facility’s nursing staff and/or respiratory therapy department.

Payment to a physician may be allowed for respiratory services only when the services are rendered as an integral, although incidental, part of the physician’s professional services in the course of diagnosis or treatment of an injury or illness. It is expected that respiratory therapy services will most often be used in cases of acute respiratory disease or acute exacerbation of chronic disease. Nevertheless, selected chronic stable conditions could require respiratory services. Acute disease states are expected to either subside after a short period of treatment, or, if no response occurs, transfer the patient to a higher level of care.

• Respiratory therapy services performed in a nursing facility or office setting may be eligible for payment to a physician if 1 of the following conditions is met:

• The service is personally performed by the physician or qualified Non-Physician Practitioner (NPP) if provision of the service is within the scope of his/her license.

or ,

• The service is performed by ancillary personnel employed by the physician, under the direct personal supervision of the physician, and is furnished during a course of treatment in which the physician performs an initial service and subsequent service(s), which reflect his/her active participation in and management of the course of treatment.

Medically necessary reasons for pulse oximetry include:

• The patient exhibits signs or symptoms of acute respiratory dysfunction such as:

• Tachypnea

• Dyspnea

• Cyanosis

• Respiratory distress

• Confusion

• Hypoxia

• The patient has chronic lung disease, severe cardiopulmonary disease, or neuromuscular disease involving the muscles of respiration, and oximetry is needed for at least 1 of the following reasons:

• Initial evaluation to determine the severity of respiratory impairment

• Evaluation of an acute change in condition

• Evaluation of exercise tolerance in a patient with respiratory disease

• Evaluation to establish medical necessity of an oxygen therapeutic regimen

• The patient has sustained severe multiple trauma or complains of acute severe chest pain

• The patient is under treatment with a medication with known pulmonary toxicity and oximetry is medically necessary to monitor for potential adverse effects of therapy

Note:

*The results of tests performed by a durable medical equipment (DME) supplier or their employees to qualify patients for home oxygen service are not covered.

Summary of evidence (opening)

N/A

the full summary and analysis of evidence are in the CMS record.

Dates, lineage and related policies

Original determination effective
2015-10-01
Current revision effective
2021-06-24
Last reviewed by the contractor
2021-05-19
MCD version
47
Derived from
L31755

Using this policy on a claim

Match the documented indication to the covered indications above before the service is scheduled, carry a diagnosis from the article's covered list on the claim line, and keep the elements the documentation section asks for in the record, because the contractor can request it later through medical review. A denial under this policy arrives as CARC 50 with remark N115; the LCD lookup guide walks through the appeal path and the Advance Beneficiary Notice rules, and the Palmetto GBA hub lists every other active policy from the same contractor.

Frequently asked questions

What does LCD L33446 cover?

Respiratory therapy services provided in a facility are usually the responsibility of the facility’s nursing staff and/or respiratory therapy department. The full indications and limitations are reproduced on this page from the CMS Medicare Coverage Database export of September 24, 2026.

Which states does LCD L33446 apply to?

Palmetto GBA applies it to Medicare claims in AL, GA, NC, SC, TN, VA, WV. A Local Coverage Determination binds only the contractor that wrote it; the same service in another jurisdiction is judged under that contractor's own policy or, where none exists, claim by claim.

Which diagnosis codes support medical necessity under LCD L33446?

The companion billing and coding article A56730 lists 318 ICD-10-CM codes in 2 groups that support medical necessity; the first 24 appear on this page and the complete list is in the article on cms.gov.

How do I appeal a denial under LCD L33446?

The remittance carries claim adjustment reason code 50 with remark code N115, naming the LCD. Compare the documented indication with the policy's covered indications and the article's diagnosis list, then file a redetermination within 120 days with the record attached; if the service genuinely falls outside the policy, the patient can be billed only when a valid Advance Beneficiary Notice was obtained before the service.

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.

Disclaimer

The policy text and code lists are reproduced from the CMS Medicare Coverage Database export as an operational reference. Verify against the current LCD and article on cms.gov before billing; coverage depends on the full record and the contractor. Not legal, clinical or billing advice.