Form CMS-484 Oxygen CMN

DEPARTMENT OF HEALTH AND HUMAN SERVICES
CENTERS FOR MEDICARE & MEDICAID SERVICES

Form Approved
OMB No. 0938-0679

CERTIFICATE OF MEDICAL NECESSITY
CMS-484— OXYGEN

DME 484.3

SECTION A: Certification Type/Date: INITIAL ___/___/___ REVISED ___/___/___ RECERTIFICATION___/___/___
PATIENT NAME, ADDRESS, TELEPHONE and HICN

SUPPLIER NAME, ADDRESS, TELEPHONE and NSC or NPI #

(__ __ __) __ __ __ – __ __ __ __ HICN ______________________

(__ __ __) __ __ __ – __ __ __ __ NSC or NPI #____________

PLACE OF SERVICE ______________ Supply Item/Service Procedure Code(s): PT DOB ____/____/____ Sex ____ (M/F) Ht. ____(in) Wt ____
NAME and ADDRESS of FACILITY
if applicable (see reverse)

PHYSICIAN NAME, ADDRESS, TELEPHONE and UPIN or NPI #

(__ __ __) __ __ __ – __ __ __ __ UPIN or NPI #____________

SECTION B: Information in this Section May Not Be Completed by the Supplier of the Items/Supplies.
EST. LENGTH OF NEED (# OF MONTHS): ______ 1–99 (99=LIFETIME)

ANSWERS

DIAGNOSIS CODES: ______ ______ ______ ______

ANSWER QUESTIONS 1–9. (Check Y for Yes, N for No, or D for Does Not Apply, unless otherwise noted.)

a)_________mm Hg 1. Enter the result of most recent test taken on or before the certification date listed in
b)_____________%
Section A. Enter (a) arterial blood gas PO2 and/or (b) oxygen saturation test;
c)____/____/____
(c) date of test.
o1

o2

o3

2. Was the test in Question 1 performed (1) with the patient in a chronic stable state as an outpatient,
(2) within two days prior to discharge from an inpatient facility to home, or
(3) under other circumstances?
o1 o2 o3
3. Check the one number for the condition of the test in Question 1: (1) At Rest; (2) During Exercise;
(3) During Sleep
oY oN oD
4. If you are ordering portable oxygen, is the patient mobile within the home? If you are not ordering
portable oxygen, check D.
______________LPM 5. Enter the highest oxygen flow rate ordered for this patient in liters per minute. If less than 1 LPM,
enter an “X”.
a)_________mm Hg 6. If greater than 4 LPM is prescribed, enter results of most recent test taken on 4 LPM. This may be an
b)_____________%
(a) arterial blood gas PO2 and/or (b) oxygen saturation test with patient in a chronic stable state.
c)____/____/____
Enter date of test (c).

ANSWER QUESTIONS 79 ONLY IF PO2 = 56–59 OR OXYGEN SATURATION = 89 IN QUESTION 1
oY
oY

oN
oN

oY

oN

7. Does the patient have dependent edema due to congestive heart failure?
8. Does the patient have cor pulmonale or pulmonary hypertension documented by P pulmonale on
an EKG or by an echocardiogram, gated blood pool scan or direct pulmonary artery pressure
measurement.
9. Does the patient have a hematocrit greater than 56%?

NAME OF PERSON ANSWERING SECTION B QUESTIONS, IF OTHER THAN PHYSICIAN (Please Print):
NAME__________________________________ TITLE________________________EMPLOYER________________________

SECTION C: Narrative Description of Equipment and Cost
(1) Narrative description of Iall items, accessories and option ordered; (2) Suppliers charge; and (3) Medicare Fee Schedule Allowance for
each item, accessory, and option (see instructions on back)

SECTION D: PHYSICIAN Attestation and Signature/Date
I certify that I am the treating physician identified in Section A of this form. I have received Sections A, B and C of the Certificate of
Medical Necessity (including charges for items ordered). Any statement on my letterhead attached hereto, has been reviewed and signed
by me. I certify that the medical necessity information in Section B is true, accurate and complete, to the best of my knowledge, and I
understand that any falsification, omission, or concealment of material fact in that section may subject me to civil or criminal liability.

PHYSICIAN’S SIGNATURE_________________________________________________________DATE _____/_____/_____

Signature and Date Stamps Are Not Acceptable.
Form CMS–484 (11/11)

INSTRuCTIONS FOR COMPLETING THE CERTIFICATE OF MEDICAL NECESSITY

FOR OXYGEN

SECTION A:

(May be completed by the supplier)

CERTIFICATION
DATE:

If this is an initial certification for this patient, indicate this by placing date (MM/DD/YY) needed initially in the space TYPE/
marked “INITIAL.” If this is a revised certification (to be completed when the physician changes the order, based on the
patient’s changing clinical needs), indicate the initial date needed in the space marked “INITIAL,” and indicate the
recertification date in the space marked “REVISED.” If this is a recertification, indicate the initial date needed in the
space marked “INITIAL,” and indicate the recertification date in the space marked “RECERTIFICATION.” Whether
submitting a REVISED or a RECERTIFIED CMN, be sure to always furnish the INITIAL date as well as the REVISED or
RECERTIFICATION date.

PATIENT
INFORMATION:

Indicate the patient’s name, permanent legal address, telephone number and his/her health insurance claim number
(HICN) as it appears on his/her Medicare card and on the claim form.

SUPPLIER
INFORMATION:

Indicate the name of your company (supplier name), address and telephone number along with the Medicare Supplier
Number assigned to you by the National Supplier Clearinghouse (NSC) or applicable National Provider Identifier (NPI). If
using the NPI Number, indicate this by using the qualifier XX followed by the 10-digit number. If using a legacy number,
e.g. NSC number, use the qualifier 1C followed by the 10-digit number. (For example. 1Cxxxxxxxxxx)

PLACE OF SERVICE:

Indicate the place in which the item is being used, i.e., patient’s home is 12, skilled nursing facility (SNF) is 31, End
Stage Renal Disease (ESRD) facility is 65, etc. Refer to the DMERC supplier manual for a complete list.

FACILITY NAME:

If the place of service is a facility, indicate the name and complete address of the facility.

SUPPLY ITEM/SERVICE
PROCEDURE CODE(S):

List all procedure codes for items ordered. Procedure codes that do not require certification should not be listed
on the CMN.

PATIENT DOB, HEIGHT,
WEIGHT AND SEX:

Indicate patient’s date of birth (MM/DD/YY) and sex (male or female); height in inches and weight in pounds, if requested.

PHYSICIAN NAME,
ADDRESS:

Indicate the PHYSICIAN’S name and complete mailing address.

PHYSICIAN
INFORMATION:

Accurately indicate the treating physician’s Unique Physician Identification Number (UPIN) or applicable National
Provider Identifier (NPI). If using the NPI Number, indicate this by using the qualifier XX followed by the 10-digit number.
If using UPIN number, use the qualifier 1G followed by the 6-digit number. (For example. 1Gxxxxxx)

PHYSICIAN’S
TELEPHONE NO:

Indicate the telephone number where the physician can be contacted (preferably where records would be accessible
pertaining to this patient) if more information is needed.

SECTION B:

(May not be completed by the supplier. While this section may be completed by a non-physician clinician, or a
Physician employee, it must be reviewed, and the CMN signed (in Section D) by the treating practitioner.)

EST. LENGTH OF NEED:

Indicate the estimated length of need (the length of time the physician expects the patient to require use of the ordered
item) by filling in the appropriate number of months. If the patient will require the item for the duration of his/her life,
then enter “99”.

DIAGNOSIS CODES:

In the first space, list the diagnosis code that represents the primary reason for ordering this item. List any additional
diagnosis codes that would further describe the medical need for the item (up to 4 codes).

QUESTION SECTION:

This section is used to gather clinical information to help Medicare determine the medical necessity for the item(s)
being ordered. Answer each question which applies to the items ordered, checking “Y” for yes, “N” for no, or “D” for
does not apply.

NAME OF PERSON
ANSWERING SECTION B
QUESTIONS:

If a clinical professional other than the treating physician (e.g., home health nurse, physical therapist, dietician) or a
physician employee answers the questions of Section B, he/she must print his/her name, give his/her professional title
and the name of his/her employer where indicated. If the physician is answering the questions, this space may be
left blank.

SECTION C:

(To be completed by the supplier)

NARRATIVE
DESCRIPTION OF
EQUIPMENT & COST:

Supplier gives (1) a narrative description of the item(s) ordered, as well as all options, accessories, supplies and drugs;
(2) the supplier’s charge for each item(s), options, accessories, supplies and drugs; and (3) the Medicare fee schedule
allowance for each item(s), options, accessories, supplies and drugs, if applicable.

SECTION D:

(To be completed by the physician)

PHYSICIAN
ATTESTATION:

The physician’s signature certifies (1) the CMN which he/she is reviewing includes Sections A, B, C and D; (2) the
answers in Section B are correct; and (3) the self-identifying information in Section A is correct.

PHYSICIAN SIGNATURE
AND DATE:

After completion and/or review by the physician of Sections A, B and C, the physician’s must sign and date the CMN in
Section D, verifying the Attestation appearing in this Section. The physician’s signature also certifies the items ordered
are medically necessary for this patient.

According to the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number. The valid OMB control number for
this information collection is 0938-0679. The time required to complete this information collection is estimated to average 12 minutes per response, including the time to review instructions, search existing
resources, gather the data needed, and complete and review the information collection. If you have any comments concerning the accuracy of the time estimate or suggestions for improving this form,
please write to: CMS, Attn: PRA Reports Clearance Officer, 7500 Security Blvd. Baltimore, Maryland 21244.

DO NOT SuBMIT CLAIMS TO THIS ADDRESS. Please see http://www.medicare.gov/ for information on claim filing.
Form CMS-484 (11/11) INSTRUCTIONS