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
Code deleted, see 80327, 80328

Official Description

Dihydrotestosterone (DHT)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 82651 refers to a laboratory test specifically designed to measure the level of dihydrotestosterone (DHT) in the blood. DHT is a powerful androgen hormone that is synthesized from testosterone through the action of the enzyme 5-alpha-reductase. This hormone plays a crucial role in sexual development, particularly in male embryos, where it is responsible for the formation of external genitalia. During puberty, DHT contributes to various physical changes, including an increase in muscle mass, a deepening of the voice, and the stimulation of facial and body hair growth. In adult males, DHT serves as the primary androgen affecting the prostate gland and hair follicles. Abnormal levels of DHT can lead to significant health issues; for instance, low levels in infants may result in conditions such as pseudohermaphroditism, while elevated levels in adults can be associated with androgenic alopecia, commonly known as male pattern baldness, as well as prostate-related problems. The test requires a blood sample, which is obtained through a procedure known as venipuncture, and it is important that the sample is drawn during the early morning hours, specifically between 6 am and 10 am. The serum obtained from the blood sample is then analyzed using a sophisticated technique called quantitative high performance liquid chromatography-tandem mass spectrometry, ensuring accurate measurement of DHT levels.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The dihydrotestosterone (DHT) test, represented by CPT® Code 82651, is indicated for several specific conditions and symptoms that may warrant evaluation of DHT levels in the body. These indications include:

  • Sexual Development Issues Low levels of DHT in infants may lead to pseudohermaphroditism, a condition where an individual has ambiguous genitalia.
  • Androgenic Alopecia Elevated DHT levels in adult males can contribute to androgenic alopecia, commonly referred to as male pattern baldness.
  • Prostate Problems High levels of DHT are associated with various prostate issues, including benign prostatic hyperplasia (BPH) and prostate cancer.

2. Procedure

The procedure for obtaining a DHT level measurement involves several critical steps to ensure accurate results. The first step is to prepare the patient for venipuncture, which is the process of drawing blood from a vein. It is essential that the blood sample is collected during the early morning hours, specifically between 6 am and 10 am, as this timing can influence hormone levels. Once the patient is positioned comfortably, a tourniquet is applied to the upper arm to engorge the veins, making them more prominent and easier to access. The healthcare provider then cleans the puncture site with an antiseptic to minimize the risk of infection. After ensuring that the site is adequately prepared, a sterile needle is inserted into the vein to collect the blood sample. The blood is drawn into a collection tube, which is then labeled appropriately for identification. Following the collection, the needle is removed, and pressure is applied to the puncture site to stop any bleeding. The collected serum is then processed and analyzed using quantitative high performance liquid chromatography-tandem mass spectrometry, a highly sensitive and specific method that allows for precise measurement of DHT levels in the serum.

3. Post-Procedure

After the blood sample has been collected for the DHT test, there are a few post-procedure considerations to keep in mind. The patient may experience slight discomfort or bruising at the venipuncture site, which is typically mild and resolves quickly. It is advisable for the patient to apply pressure to the site for a few minutes to minimize bleeding and reduce the risk of bruising. There are generally no specific restrictions or recovery protocols following the test, and patients can resume their normal activities immediately. However, if the patient experiences excessive bleeding, severe pain, or signs of infection at the puncture site, they should seek medical attention promptly. The results of the DHT test will be analyzed and reported, providing valuable information for the healthcare provider to assess the patient's hormonal status and any related health concerns.

Short Descr ASSAY OF DIHYDROTESTOSTERONE
Medium Descr ASSAY OF DIHYDROTSTOSTERONE
Long Descr Dihydrotestosterone (DHT)
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 9 - 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
APC Status Indicator Items and Services Packaged into APC Rates
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) T1H - Lab tests - other (non-Medicare fee schedule)
MUE Not applicable/unspecified.
CCS Clinical Classification 233 - Laboratory - Chemistry and Hematology
Date
Action
Notes
2015-01-01 Deleted Code deleted, see 80327, 80328
2013-01-01 Changed Medium Descriptor changed.
Pre-1990 Added Code added.
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"