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The CPT® Code 84105 refers to the laboratory test for measuring inorganic phosphorus, specifically phosphate levels in urine. Phosphate is a vital intracellular anion predominantly located in bone and soft tissue, playing a crucial role in various physiological functions. It is essential for cellular energy processes, which are particularly important for the proper functioning of nerves and muscles. Additionally, phosphate is integral to the formation and repair of bones and teeth. Abnormal phosphate levels can indicate underlying health issues; decreased levels are often associated with malnutrition and can lead to muscle weakness and neurological dysfunction. Conversely, elevated phosphate levels may suggest problems related to kidney function or parathyroid gland activity. The test for CPT® Code 84105 involves the collection of either a 24-hour urine sample or a random urine sample, which is then analyzed using quantitative spectrophotometry to determine the phosphate concentration. This method provides accurate measurements necessary for diagnosing and monitoring various medical conditions related to phosphate metabolism.
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The test associated with CPT® Code 84105 is indicated for various clinical scenarios where phosphate levels in urine need to be assessed. The following conditions may warrant this test:
The procedure for obtaining a urine sample for CPT® Code 84105 involves specific steps to ensure accurate measurement of inorganic phosphorus levels. The following procedural steps are typically followed:
After the urine sample has been collected and analyzed, the results will be interpreted by a qualified healthcare professional. Depending on the findings, further diagnostic testing or clinical evaluation may be necessary. Patients may be advised on dietary modifications or additional treatments if abnormal phosphate levels are detected. It is important for healthcare providers to communicate the results to the patient and discuss any implications for their health, as well as any necessary follow-up actions.
| Short Descr | ASSAY OF URINE PHOSPHORUS | Medium Descr | ASSAY OF PHOSPHORUS INORGANIC URINE | Long Descr | Phosphorus inorganic (phosphate); urine | Status Code | Statutory Exclusion (from MPFS, may be paid under other methodologies) | Global Days | XXX - Global Concept Does Not Apply | PC/TC Indicator (26, TC) | 9 - Not Applicable | Multiple Procedures (51) | 9 - Concept does not apply. | Bilateral Surgery (50) | 9 - Concept does not apply. | Physician Supervisions | 09 - Concept does not apply. | Assistant Surgeon (80, 82) | 9 - Concept does not apply. | Co-Surgeons (62) | 9 - Concept does not apply. | Team Surgery (66) | 9 - Concept does not apply. | Diagnostic Imaging Family | 99 - Concept Does Not Apply | CLIA Waived (QW) | No | APC Status Indicator | Conditionally packaged laboratory tests | Type of Service (TOS) | 5 - Diagnostic Laboratory | Berenson-Eggers TOS (BETOS) | T1H - Lab tests - other (non-Medicare fee schedule) | MUE | 1 | CCS Clinical Classification | 233 - Laboratory - Chemistry and Hematology |
| 90 | Reference (outside) laboratory: when laboratory procedures are performed by a party other than the treating or reporting physician or other qualified health care professional, the procedure may be identified by adding modifier 90 to the usual procedure number. | Q4 | Service for ordering/referring physician qualifies as a service exemption | 26 | Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number. | 76 | Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service. | 77 | Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service. | 91 | Repeat clinical diagnostic laboratory test: in the course of treatment of the patient, it may be necessary to repeat the same laboratory test on the same day to obtain subsequent (multiple) test results. under these circumstances, the laboratory test performed can be identified by its usual procedure number and the addition of modifier 91. note: this modifier may not be used when tests are rerun to confirm initial results; due to testing problems with specimens or equipment; or for any other reason when a normal, one-time, reportable result is all that is required. this modifier may not be used when other code(s) describe a series of test results (eg, glucose tolerance tests, evocative/suppression testing). this modifier may only be used for laboratory test(s) performed more than once on the same day on the same patient. | GA | Waiver of liability statement issued as required by payer policy, individual case | GV | Attending physician not employed or paid under arrangement by the patient's hospice provider | GW | Service not related to the hospice patient's terminal condition | GY | Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit | Q3 | Live kidney donor surgery and related services | QJ | Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b) | QW | Clia waived test |
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| 2013-01-01 | Changed | Medium Descriptor changed. |
| Pre-1990 | Added | Code added. |
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