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ICD-10-CM 2027 diagnosis code

D35.2Benign neoplasm of pituitary gland

✓ Billable / specific

D35.2 is a valid, billable ICD-10-CM code for benign neoplasm of pituitary gland. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About D35.2

D35.2 is the ICD-10-CM diagnosis code for benign neoplasm of pituitary gland. It belongs to category D35 (benign neoplasm of other and unspecified endocrine glands), block D10-D36 (benign neoplasms, except benign neuroendocrine tumors) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within D35 (benign neoplasm of other and unspecified endocrine glands), D35.2 is specifically for benign neoplasm of pituitary gland. Related codes cover adrenal gland (D35.0), parathyroid gland (D35.1), craniopharyngeal duct (D35.3), pineal gland (D35.4), carotid body (D35.5), aortic body and other paraganglia (D35.6), other specified endocrine glands (D35.7) and endocrine gland, unspecified (D35.9).

Use an additional code to identify any functional activity.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 643 (Endocrine Disorders with MCC, relative weight 1.6139), DRG 644 (Endocrine Disorders with CC, relative weight 1.0044) and DRG 645 (Endocrine Disorders without CC/MCC, relative weight 0.7459), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 227.3 (benign neoplasm of pituitary gland and craniopharyngeal duct).

Notes that apply from higher levels

Instructions written at a parent level also apply to D35.2.

› From D35 Benign neoplasm of other and unspecified endocrine glands
Excludes1
  • 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
  • code to identify any functional activity

Broader instructions also apply from Chapter 2: Neoplasms.

Alphabetic index entries

8 entries

Terms in the official ICD-10-CM index that lead to D35.2.

Table of Drugs & Neoplasms entries

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 227.3Benign neoplasm of pituitary gland and craniopharyngeal ductapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D35.2

Is D35.2 billable?

Yes. D35.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can D35.2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict D35.2 as a principal diagnosis.

Is D35.2 a CC or MCC?

No. D35.2 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does D35.2 group to?

D35.2 is used in the MS-DRG v44.0 logic for MS-DRG 643 (Endocrine Disorders with MCC), MS-DRG 644 (Endocrine Disorders with CC) and MS-DRG 645 (Endocrine Disorders without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for D35.2?

The CMS General Equivalence Mappings map D35.2 to ICD-9-CM 227.3.