G8478 — Blood pressure measurement not performed or documented, reason not given
G8478 is a HCPCS Level II code for blood pressure measurement not performed or documented, reason not given. It belongs to the Procedures and Professional Services (Temporary) section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusM
Measurement code. Used for reporting purposes only; never paid.
Global period: XXX
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The CMS record for G8478
- Long descriptor
- Blood pressure measurement not performed or documented, reason not given
- Short descriptor
- Bp not performed/doc
- Added
- January 1, 2008
- BETOS
- M5D
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to G8478
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G8478 is not quite right, the correct code is very often within a few positions of it.
- G8461Patient receiving antiviral treatment for hepatitis c during the measurement periodterminated
- G8464Clinician documented that prostate cancer patient is not an eligible candidate for adjuvant hormonal therapy; low or intermediate risk of recurrence or risk of recurrence not determinedterminated
- G8465High or very high risk of recurrence of prostate cancer
- G8473Angiotensin converting enzyme (ace) inhibitor or angiotensin receptor blocker (arb) therapy prescribed
- G8474Angiotensin converting enzyme (ace) inhibitor or angiotensin receptor blocker (arb) therapy not prescribed for reasons documented by the clinician (e.g., allergy, intolerance, pregnancy, renal failure due to ace inhibitor, diseases of the aortic or mitral valve, other medical reasons) or (e.g., patient declined, other patient reasons)
- G8475Angiotensin converting enzyme (ace) inhibitor or angiotensin receptor blocker (arb) therapy not prescribed, reason not given
- G8476Most recent blood pressure has a systolic measurement of < 140 mmhg and a diastolic measurement of < 90 mmhg
- G8477Most recent blood pressure has a systolic measurement of >= 140 mmhg and/or a diastolic measurement of >= 90 mmhg
- G8482Influenza immunization administered or previously receivedterminated
- G8483Influenza immunization was not administered for reasons documented by clinician (e.g., patient allergy or other medical reasons, patient declined or other patient reasons, vaccine not available or other system reasons)terminated
- G8484Influenza immunization was not administered, reason not giventerminated
- G8485I intend to report the diabetes mellitus (dm) measures groupterminated
- G8486I intend to report the preventive care measures groupterminated
- G8487I intend to report the chronic kidney disease (ckd) measures groupterminated
- G8489I intend to report the coronary artery disease (cad) measures groupterminated
- G8490I intend to report the rheumatoid arthritis (ra) measures groupterminated
Questions about G8478
What is HCPCS code G8478?
G8478 is a HCPCS Level II code for blood pressure measurement not performed or documented, reason not given. It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G8478?
The CMS HCPCS file marks G8478 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is G8478 paid under the physician fee schedule?
G8478 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.