Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
CareerCenter
Medical Coding Job Board
Log in Register free account

Need help choosing the right code?

Ask CasePilot about procedures, modifiers, bundling, and coding guidance.

Try CasePilot

Official Description

Pregnanediol

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Pregnanediol is a metabolite that results from the breakdown of progesterone, a hormone that plays a crucial role in the menstrual cycle and pregnancy. The measurement of pregnanediol in urine serves as an important indicator of progesterone levels within the body. This test is particularly useful for individuals monitoring their ovulation cycles, as it can be performed at home to detect ovulation. Various factors can influence the levels of pregnanediol in the urine. For instance, adrenocorticotropic hormone (ACTH) can lead to an increase in pregnanediol levels, while the use of oral contraceptives or hormone replacement therapies may result in decreased levels. Additionally, elevated pregnanediol levels can be associated with certain medical conditions, such as ovarian cysts, tumors, adrenocortical hyperplasia, and hyperadrenocorticism. Conversely, decreased levels of pregnanediol may indicate conditions such as amenorrhea, ovarian failure, fetal death, and preeclampsia. Understanding these variations is essential for healthcare professionals when interpreting test results and assessing hormonal health.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

Pregnanediol testing is indicated for various clinical scenarios where monitoring progesterone levels is essential. The following conditions and situations may warrant the measurement of pregnanediol:

  • Ovulation Detection This test can be utilized to determine the timing of ovulation in individuals trying to conceive.
  • Assessment of Progesterone Levels It is useful in evaluating progesterone levels in patients undergoing fertility treatments or those with menstrual irregularities.
  • Monitoring Hormonal Health Pregnanediol levels may be assessed in patients with conditions affecting hormone production, such as ovarian cysts or tumors.
  • Evaluation of Adrenal Function The test can help in diagnosing conditions like adrenocortical hyperplasia and hyperadrenocorticism.
  • Investigation of Amenorrhea It may be indicated in cases of amenorrhea to assess underlying hormonal imbalances.
  • Assessment in Pregnancy Complications Pregnanediol levels can be evaluated in cases of fetal death or preeclampsia to understand the hormonal status.

2. Procedure

The procedure for measuring pregnanediol typically involves the collection of a urine sample, which can be done at home or in a clinical setting. The following steps outline the general process:

  • Step 1: Sample Collection The patient collects a urine sample, preferably during a specific time frame, such as the morning, to ensure consistency in hormone measurement. Proper collection techniques should be followed to avoid contamination.
  • Step 2: Laboratory Analysis The urine sample is then sent to a laboratory where it undergoes analysis. Various methods, such as immunoassays, may be employed to quantify the levels of pregnanediol present in the sample.
  • Step 3: Result Interpretation Once the analysis is complete, the laboratory provides the results, which are interpreted by a healthcare professional. The results will indicate the concentration of pregnanediol in the urine, which can then be correlated with clinical findings and other hormonal assessments.

3. Post-Procedure

After the collection of the urine sample and subsequent analysis, patients may not require any specific post-procedure care. However, it is essential for healthcare providers to discuss the results with the patient, explaining the implications of the pregnanediol levels in relation to their hormonal health. If the results indicate abnormal levels, further evaluation or additional testing may be necessary to determine the underlying cause and appropriate management. Patients should be advised to follow up with their healthcare provider to discuss any concerns or questions regarding their hormonal status and potential treatment options.

Short Descr ASSAY OF PREGNANEDIOL
Medium Descr PREGNANEDIOL
Long Descr Pregnanediol
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
GA Waiver of liability statement issued as required by payer policy, individual case
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
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.
Date
Action
Notes
Pre-1990 Added Code added.
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"