S3840 HCPCS Level II code: Dna analysis for germline mutations of the ret proto-oncogene for susceptibility to multiple endocrine neoplasia type 2
S3840 is the HCPCS code for “Dna analysis for germline mutations of the ret proto-oncogene for susceptibility to multiple endocrine neoplasia type 2” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
S3840Dna analysis for germline mutations of the ret proto-oncogene for susceptibility to multiple endocrine neoplasia type 2
Short description: Dna analysis ret-oncogene
HCPCS · United States
Medicare details
The indicators CMS publishes with S3840 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Not payable by Medicare
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Other medical items or services
- BETOS category
- Undefined codes
- Added
- Jul 1, 2003
Where S3840 sits
- 1S codesTemporary national codes (non-Medicare)
- 2Active code S3840Dna analysis for germline mutations of the ret proto-oncogene for susceptibility to multiple endocrine neoplasia type 2
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code S3840 mean?
S3840 is the HCPCS code for “Dna analysis for germline mutations of the ret proto-oncogene for susceptibility to multiple endocrine neoplasia type 2” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover S3840?
CMS lists S3840’s Medicare coverage as “Not payable by Medicare” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside S3840
All S codesS3652Saliva test, hormone level; to assess preterm labor riskS3655Antisperm antibodies test (immunobead)S3708Gastrointestinal fat absorption studyS3721Prostate cancer antigen 3 (pca3) testingS3722Dose optimization by area under the curve (auc) analysis, for infusional 5-fluorouracilS3800Genetic testing for amyotrophic lateral sclerosis (als)S3841Genetic testing for retinoblastomaS3842Genetic testing for von hippel-lindau diseaseS3844Dna analysis of the connexin 26 gene (gjb2) for susceptibility to congenital, profound deafnessS3845Genetic testing for alpha-thalassemiaS3846Genetic testing for hemoglobin e beta-thalassemiaS3849Genetic testing for niemann-pick disease