D34 ICD-10-CM Code: Benign neoplasm of thyroid gland
D34 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Neoplasms (C00-D49) / Benign neoplasms, except benign neuroendocrine tumors (D10-D36)
D34
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceBenign neoplasm of thyroid gland
A non-cancerous tumor of the thyroid gland, the butterfly-shaped gland in the neck that produces hormones.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for D34. Check the code and parent instructions in the Code Book.
Excludes 2
OfficialNo Excludes 2 notes are included in this display for D34. Check the code and parent instructions in the Code Book.
Related Codes
No related codes are included in this display for D34. Check the Code Book for the complete code path.
Includes
OfficialNo Includes notes are included in this display for D34. Check the code and parent instructions in the Code Book.
Excludes 1
OfficialNo Excludes 1 notes are included in this display for D34. Check the code and parent instructions in the Code Book.
Code First
OfficialNo Code First sequencing instructions are included in this display for D34. Check the code and parent instructions in the Code Book.
Use Additional
Official- code to identify any functional activity
Code Also
OfficialNo Code Also instructions are included in this display for D34. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is D34 an HCC code?
No. D34 is a billable ICD-10-CM code with no mapping under the current CMS-HCC V28 community payment model, and none under the ESRD, Part D RxHCC, or HHS-HCC models.
- Code
- D34
- Description
- Benign neoplasm of thyroid gland
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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What This Code Means
D34 is the ICD-10-CM diagnosis code for benign neoplasm of thyroid gland. A non-cancerous tumor of the thyroid gland, the butterfly-shaped gland in the neck that produces hormones. D34 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering benign neoplasms, except benign neuroendocrine tumors (d10-d36).
D34 is a billable ICD-10-CM code, but no current CMS-HCC V28 community payment mapping is shown, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
Thyroid nodules and adenomas are common benign findings; ensure malignancy has been ruled out.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for D34 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Thyroid nodules and adenomas are common benign findings; ensure malignancy has been ruled out
- •Document whether the tumor is causing thyroid dysfunction or compression symptoms
Use Additional Code
- code to identify any functional activity