CPT code 83002 – Luteinizing hormone (LH) lab test

Key takeaways

CPT code 83002 reports the gonadotropin luteinizing hormone (LH) test on serum or plasma, and it sits in the CPT Chemistry subsection (82009-84999).

Covered diagnoses include hypogonadism (E23.x, E28.x, E29.x), infertility (N97.x), and menstrual disorders (N91.x). A non-covered diagnosis is the top denial cause.

83001 (FSH) and 83002 (LH) can be billed on the same date when both are clinically indicated, because NCCI edits do not currently bundle them.

A CARC 50 or CARC 11 on an LH claim usually signals a non-covered diagnosis, while a CARC 4 flags a procedure and modifier mismatch.

Practice management software like Pabau links ICD-10 codes to CPT lab orders at the point of documentation, which cuts 83002 denials before claims go out.

CPT code 83002: Official descriptor and clinical overview

CPT code 83002 describes a “Gonadotropin; luteinizing hormone (LH)” assay, as defined by the American Medical Association’s CPT code set. The test measures serum or plasma levels of LH, a pituitary glycoprotein hormone that triggers ovulation in females and stimulates testosterone production in males.

Laboratories report the result as mIU/mL (or IU/L), using immunoassay methodology. The specimen type is serum or plasma collected in a red-top or gold-top SST tube. Most reference labs require the specimen to be centrifuged and refrigerated within two hours of collection.

Clinical indications for ordering and billing an LH test

Clinicians order LH testing when a patient presents with signs of hormonal imbalance that require pituitary-gonadal axis evaluation. Each indication must be documented in the clinical record and linked to a covered ICD-10 code before billing. Payers routinely audit LH claims for medical necessity, so the chart must carry the ordering provider’s documented rationale.

Fertility practices bill this code often, because LH is a core part of both infertility workups and ovulation monitoring. Endocrinology and men’s health practices use it just as often for hypogonadism evaluations.

• Hypogonadism evaluation (male and female): Low or inappropriately normal LH in the setting of low sex hormones distinguishes hypogonadotropic from hypergonadotropic hypogonadism.
• Female infertility workup: LH surge detection and cycle-day timing support documentation under N97.x codes.
• Menstrual irregularities: Amenorrhea, oligomenorrhea, and abnormal uterine bleeding require LH to rule out hypothalamic or pituitary pathology.
• Precocious puberty: Elevated LH confirms central (gonadotropin-dependent) precocious puberty in both sexes.
• Pituitary disorders: Low LH alongside other pituitary hormone deficiencies supports an E23.x diagnosis.
• Polycystic ovary syndrome (PCOS): An elevated LH:FSH ratio greater than 2:1 is a diagnostic feature, requiring both 83002 and 83001.
• Monitoring testosterone replacement therapy: LH suppression confirms an exogenous androgen effect. The result also helps differentiate primary from secondary hypogonadism.

Covered ICD-10-CM diagnosis codes for CPT 83002

Payers accept LH testing only when the claim carries a diagnosis code that establishes medical necessity. Medicare Administrative Contractors (MACs) publish Local Coverage Determinations (LCDs) listing accepted diagnoses.

The CMS ICD-10 codes page provides current FY update files. The table below lists the most widely accepted ICD-10-CM codes across Medicare, Medicaid, and major commercial payers. Note that Medi-Cal (California Medicaid) applies additional restrictions discussed in the prior authorization section below.

Always verify the specific LCD applicable to your MAC jurisdiction. Billing a covered diagnosis code that doesn’t match the documented clinical scenario is as risky as using a non-covered code. Use the most specific code available, and avoid “unspecified” codes when documentation supports a more precise diagnosis.

CPT 83001 vs 83002: FSH vs LH billing differences

CPT 83001 (FSH) and CPT 83002 (LH) are sibling gonadotropin codes that cover different analytes, so neither one substitutes for the other. Each code needs its own medical necessity documentation, including a diagnosis code that supports the specific test ordered.

NCCI edit status changes annually. Verify the current edit table via AAPC Codify before assuming 83001 and 83002 can always be billed together. When a payer’s LCD restricts frequency, billing both on the same date for routine monitoring (rather than initial evaluation) may still trigger a denial.

Related codes for a complete hormonal panel

LH is rarely the only test ordered in a hormonal workup, so coders managing reproductive endocrinology panels need the full companion code set. When the workup is part of an assisted reproduction encounter, these codes appear alongside the IVF CPT codes for that cycle.

Each panel code requires its own diagnostic justification on the claim. Bundling all codes under a single diagnosis without supporting documentation for each analyte is a frequent audit finding.

Medicare reimbursement and fee schedule rates for 83002

CPT code 83002 is reimbursed under the CMS Clinical Laboratory Fee Schedule (CLFS), not the Physician Fee Schedule. Laboratory tests have a single national allowable with no facility/non-facility split. Practices submitting claims electronically through Claim.MD can check CLFS rates and payer eligibility before submission.

Reimbursement rates change each calendar year. Always pull the current CLFS file from CMS rather than relying on prior-year data. Some MAC jurisdictions publish articles clarifying frequency limits for repeat LH testing, which can affect the expected annual reimbursement per patient.

Documentation requirements to support a clean CPT 83002 claim

A clean LH claim needs documentation that supports every element a payer auditor would check. Missing any one of the following commonly triggers an automated denial. A clearinghouse that scrubs claims before submission catches many of these issues before they cost a payment cycle.

1. Signed lab order with clinical indication: The chart must show the ordering provider’s signature and the documented reason for the test. A diagnosis code alone is not enough. A bare ICD-10 code without clinical context does not satisfy medical necessity review.
2. ICD-10 code linked directly to the test: The diagnosis code must map specifically to the LH test, not to a general complaint. Document the clinical rationale in the progress note before the order is placed.
3. Specimen type and collection date: Serum or plasma must be confirmed. Date and time of collection matter when LH pulsatility could affect interpretation (see specimen handling below).
4. ABN for Medicare patients (when applicable): If the test may not meet medical necessity under the applicable LCD, issue an Advance Beneficiary Notice before collection. Without an ABN, the practice absorbs the cost if Medicare denies the claim.
5. Standing order policy for repeat testing: Repeat LH orders, such as serial ovulation monitoring, need documented clinical justification for each draw. An open standing order is not enough. Some payers require a new signed order per visit.

The same documentation standard applies across Chemistry codes. The EHR note should record the clinical question the test is intended to answer, not just the test name.

Prior authorization and payer-specific policies for CPT 83002

Most payers do not require prior authorization (PA) for a routine LH test. However, frequency limits work as a soft prior authorization. The claim passes without PA, but repeat orders beyond the covered frequency are denied retrospectively.

Medi-Cal (California Medicaid) is a notable exception. Quest Diagnostics’ published Medi-Cal policy documents specify that LH and FSH testing is covered only for a restricted set of diagnosis codes. Requests outside those codes may be denied regardless of clinical documentation.

California DHCS’s position is that LH testing for general wellness or weight management is non-covered. The diagnosis must specifically indicate a reproductive endocrine disorder or pituitary pathology.

• Medicare: No prior authorization required. MAC LCDs govern covered diagnoses and frequency. Some LCDs restrict repeat testing to two or three times per year for established diagnoses.
• Medi-Cal (California): No PA required, but covered diagnoses are more restrictive than Medicare. Refer to the current Quest Diagnostics Medi-Cal LH/FSH policy document for the approved ICD-10 list.
• Commercial plans: PA requirements vary by plan and contract year. High-deductible plans and managed care plans are most likely to require pre-authorization for specialty endocrine panels that include LH.
• Medicaid (other states): Coverage policies differ by state managed care organization. Verify with the specific MCO before ordering.

Common CPT 83002 denial reasons and how to prevent them

LH claims face a predictable set of denial patterns. Understanding each one supports targeted prevention and faster appeals. Knowing which denial type hits your practice most often tells you which workflow fix to build first. The table below summarizes the most frequent 83002 denial scenarios.

Check the CARC (Claim Adjustment Reason Code) on each electronic remittance advice (ERA) against a list of denial codes for billers. That tells the billing team which correction workflow each denial belongs in.

A CARC 50 (not medically necessary) or CARC 11 (diagnosis inconsistent with the procedure) on an LH claim almost always points to a non-covered diagnosis. A CARC 4 means the procedure code is inconsistent with the modifier used, so the fix is a modifier correction. Each denial in the table above has a matching check earlier in the workflow.

Specimen collection and handling for LH testing

Specimen handling affects claim validity as well as the lab result. A rejected specimen requires recollection. If the recollection happens on a different date, a payer’s claims system may read the second billing event as a frequency violation.

• Acceptable specimen types: Serum (red-top or SST gold-top tube) or plasma (EDTA or heparin). Most reference labs prefer serum. Confirm with your lab’s test directory before collection.
• Time-of-day considerations: LH is secreted in pulses. A single morning draw is standard for most clinical purposes, but serial draws (20-30 minutes apart, pooled) are used when pulsatile LH is clinically relevant. Document the collection protocol in the chart to support the billing narrative.
• Centrifuge and storage: Centrifuge within two hours of collection. Separate serum and refrigerate at 2-8°C. Stable for 48 hours refrigerated; freeze for longer transport.
• Unacceptable specimens: Gross hemolysis, lipemia, or specimens collected in the wrong tube type (e.g. oxalate tubes) are typically rejected. Document a rejected specimen as a collection failure in the chart, and never recode the rejected draw as a billable event.

How Pabau supports accurate CPT 83002 billing

Practices ordering LH tests through in-office lab workflows or reference lab requisitions need billing software that connects the clinical order to the claim without re-entry. Practice management software like Pabau includes claims software for practices that maps ICD-10 codes to CPT lab orders at the point of documentation. The diagnosis is captured before the specimen leaves the practice.

Pabau connects to Claim.MD, its US clearinghouse partner, so claims are scrubbed against payer rules before transmission. The scrub catches non-covered diagnosis mismatches and missing provider enrollment flags.

Fertility, HRT, and reproductive endocrinology practices bill high volumes of hormonal panels. For them, the automated scrub replaces a manual pre-submission review that otherwise costs two to three minutes per claim.

Pabau also processes electronic remittance advice, so ERA denial codes map back to the original claim without manual matching. When a CARC 50 hits a CPT 83002 claim, the billing team sees the denial in the same workflow where they manage the original order.

Reduce CPT 83002 denials before they happen

Pabau links ICD-10 codes to lab orders at the point of documentation, flags missing medical necessity, and submits clean claims through our clearinghouse integration. See how it works for hormonal testing workflows.

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Conclusion

Most CPT 83002 denials trace back to decisions made before the specimen is drawn. The diagnosis code, the draw count, and the ABN are all settled at order entry, so that is where your billing checks belong.

The trade-off is a slightly slower order screen in exchange for fewer appeals and less rework. For practices running LH alongside FSH, estradiol, and testosterone, that trade pays off across every code in the panel.

Book a demo to see how Pabau checks diagnosis codes and draw frequency at order entry, so your LH claims go out clean.

Continue your research

Need to understand how clearinghouse claim scrubbing works? What makes a clean claim explains the pre-submission checks that prevent Chemistry code denials before they reach the payer.

Managing insurance eligibility verification before ordering labs? Insurance eligibility verification covers payer checks that confirm coverage before the specimen is collected.

Looking for structured guidance on the superbill for hormonal panels? How to build a superbill walks through capturing all companion lab codes in a single billable encounter.

Building a denial workflow from your remittance data? Denial management in healthcare shows how to sort, route, and appeal denials by root cause.

Want denials matched back to the original claim? Electronic remittance advice explains how ERA files feed payment posting and denial follow-up.

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