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Official Description

Hemoglobin, quantitative, transcutaneous, per day; methemoglobin

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 88741 refers to a quantitative transcutaneous hemoglobin test specifically for methemoglobin. This test is a noninvasive procedure that utilizes an eight-wavelength pulse oximeter to measure the levels of methemoglobin present in the blood. Methemoglobin is a variant of hemoglobin that is unable to effectively transport oxygen, which can lead to significant health issues if present in elevated amounts. Under normal circumstances, methemoglobin constitutes only 1-2 percent of total hemoglobin in healthy individuals. However, certain genetic disorders or exposure to specific toxins can result in increased levels of methemoglobin, leading to a condition known as methemoglobinemia. This condition can impair oxygen delivery to tissues and may necessitate medical intervention. The test is performed by attaching a measurement sensor to the patient's finger, allowing for continuous monitoring of methemoglobin levels on a daily basis. This procedure is crucial for diagnosing and managing conditions related to abnormal hemoglobin levels, particularly in cases of suspected poisoning or genetic disorders affecting hemoglobin function.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The quantitative transcutaneous hemoglobin test for methemoglobin (CPT® Code 88741) is indicated for the following conditions:

  • Methemoglobinemia - A condition characterized by elevated levels of methemoglobin, which can impair oxygen transport in the blood.
  • Exposure to Toxins - Situations where patients may have been exposed to substances that can increase methemoglobin levels, necessitating monitoring and evaluation.
  • Genetic Conditions - Patients with hereditary disorders that predispose them to higher methemoglobin levels may require regular testing to manage their condition effectively.

2. Procedure

The procedure for performing the quantitative transcutaneous hemoglobin test for methemoglobin involves several key steps:

  • Preparation of the Patient - The patient is positioned comfortably, and the measurement site, typically a fingertip, is cleaned to ensure accurate readings.
  • Application of the Sensor - An eight-wavelength pulse oximeter sensor is attached to the patient's finger. This device is designed to measure the levels of methemoglobin transcutaneously.
  • Measurement Process - The pulse oximeter emits light at various wavelengths, which penetrates the skin and interacts with the blood. The device calculates the concentration of methemoglobin based on the absorption of light at these wavelengths.
  • Data Collection - The test continuously monitors and records the levels of methemoglobin, providing quantitative data on a per day basis.
  • Interpretation of Results - The results are analyzed to determine if the methemoglobin levels are within normal limits or if they indicate a potential health issue that requires further medical attention.

3. Post-Procedure

After the completion of the quantitative transcutaneous hemoglobin test for methemoglobin, the patient may be monitored for any immediate reactions to the procedure, although it is generally noninvasive and well-tolerated. The results should be reviewed by a healthcare professional to assess the need for any further diagnostic testing or treatment based on the methemoglobin levels obtained. If elevated levels are detected, appropriate interventions may be initiated to address the underlying cause of the methemoglobinemia. Regular follow-up may be necessary for patients with chronic conditions affecting hemoglobin levels to ensure ongoing management and care.

Short Descr TRANSCUTANEOUS METHB
Medium Descr HEMOGLOBIN QUANTITATIVE TC PER DAY METHEMOGLOBIN
Long Descr Hemoglobin, quantitative, transcutaneous, per day; methemoglobin
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
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
Date
Action
Notes
2009-01-01 Added -
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