Hospitals report these codes with terse, inconsistent chargemaster text. This plain-English title was written by an AI model from that text and has not been reviewed by a person, so it can be wrong. The prices on this page come straight from hospital filings and do not depend on it.
Original text from hospital filings
HC Assay of Free Thyroxine - T4 Free
Mountainside, NJ
See all hospitals reporting CPT 84439 →Price type
Children's Specialized Hospital’s median price of $103 is 505% above the median hospital's median price ($17), higher than 91% of the 2,631 hospitals reporting CPT 84439. The highlighted bar is where this hospital falls; shaded is the middle 50% of hospitals.
Negotiated rates from the hospital’s own file: 5 payers, 10 plan rates. A facility fee, a professional fee, a per diem and a case rate are different bills, so each is listed on its own. Open a payer to see it across hospitals.
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| # | ||||
|---|---|---|---|---|
| 1 | UnitedHealthcare community plan fee schedule · outpatient | $7.44 | $7.44 | $7.44 – $7.44 |
| 2 | Bcbs Nj nj health percent of total billed charges · outpatientfrom % of charges | $13.60 | $13.60 | $13.60 – $13.60 |
| 3 | First Health commercial percent of total billed charges · outpatientfrom % of charges | $81.60 | $81.60 | $81.60 – $81.60 |
| 4 | Cigna hmo percent of total billed charges · outpatientfrom % of charges | $81.91 | $81.91 | $81.91 – $81.91 |
| 5 | Cigna ppo percent of total billed charges · outpatientfrom % of charges | $81.91 | $81.91 | $81.91 – $81.91 |
| 6 | Aetna better health percent of total billed charges · outpatientfrom % of charges | $103.98 | $103.98 | $103.98 – $103.98 |
| 7 | Aetna hmo percent of total billed charges · outpatientfrom % of charges | $104.72 | $104.72 | $104.72 – $104.72 |
| 8 | Aetna ppo percent of total billed charges · outpatientfrom % of charges | $104.72 | $104.72 | $104.72 – $104.72 |
| 9 | Bcbs Nj managed percent of total billed charges · outpatientfrom % of charges | $133.28 | $133.28 | $133.28 – $133.28 |
| 10 | Bcbs Nj non-managed percent of total billed charges · outpatientfrom % of charges | $133.28 | $133.28 | $133.28 – $133.28 |
Last updated: Mar 4, 2026
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