D35.1 — Benign neoplasm of parathyroid gland

Billable

Is D35.1 billable?

Yes — D35.1 is billable for FY2027. D35.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. D35.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.

D35.1 at a glance

Code	D35.1
Description	Benign neoplasm of parathyroid gland
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does D35.1 group to?

D35.1 sits in MDC 10 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

643Endocrine Disorders with MCCmedical
644Endocrine Disorders with CCmedical
645Endocrine Disorders without CC/MCCmedical

How is D35.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to D35.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

Adenoma › chief cell
Adenoma › water-clear cell

Excludes1 — never code together — inherited from D35

The conditions below can never be reported together with D35.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

benign neoplasm of endocrine pancreas (D13.7)
benign neoplasm of ovary (D27.-)
benign neoplasm of testis (D29.2.-)
benign neoplasm of thymus (D15.0)

Use additional code — inherited from D35

Report an additional code alongside D35.1 to fully describe the condition. D35.1 is sequenced first.

code to identify any functional activity

How long has D35.1 existed?

D35.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.