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ICD-10-CM 2027 diagnosis code

D16.5Benign neoplasm of lower jaw bone

✓ Billable / specific

D16.5 is a valid, billable ICD-10-CM code for benign neoplasm of lower jaw bone. 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 D16.5

D16.5 is the ICD-10-CM diagnosis code for benign neoplasm of lower jaw bone. It belongs to category D16 (benign neoplasm of bone and articular cartilage), 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 D16 (benign neoplasm of bone and articular cartilage), D16.5 is specifically for benign neoplasm of lower jaw bone. Related codes cover scapula and long bones of upper limb (D16.0), short bones of upper limb (D16.1), long bones of lower limb (D16.2), short bones of lower limb (D16.3), bones of skull and face (D16.4), vertebral column (D16.6), ribs, sternum and clavicle (D16.7), pelvic bones, sacrum and coccyx (D16.8) and 1 more.

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 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 157 (Dental and Oral Diseases with MCC, relative weight 1.809), DRG 158 (Dental and Oral Diseases with CC, relative weight 0.9366) and DRG 159 (Dental and Oral Diseases without CC/MCC, relative weight 0.6893), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), 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 213.1 (benign neoplasm of lower jaw bone).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Keratocyst of mandible
  • Keratocystic odontogenic tumor of mandible

Notes that apply from higher levels

Instructions written at a parent level also apply to D16.5.

› From D16 Benign neoplasm of bone and articular cartilage
Excludes1
  • benign neoplasm of connective tissue of ear (D21.0)
  • benign neoplasm of connective tissue of eyelid (D21.0)
  • benign neoplasm of connective tissue of larynx (D14.1)
  • benign neoplasm of connective tissue of nose (D14.0)
  • benign neoplasm of synovia (D21.-)

Broader instructions also apply from Chapter 2: Neoplasms.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to D16.5.

Table of Drugs & Neoplasms entries

Codes whose notes reference D16.5

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 →
  • 213.1Benign neoplasm of lower jaw boneexact

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 D16.5

Is D16.5 billable?

Yes. D16.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can D16.5 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict D16.5 as a principal diagnosis.

Is D16.5 a CC or MCC?

No. D16.5 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does D16.5 group to?

D16.5 is used in the MS-DRG v44.0 logic for MS-DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC), MS-DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC), MS-DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC), MS-DRG 157 (Dental and Oral Diseases with MCC), MS-DRG 158 (Dental and Oral Diseases with CC) and MS-DRG 159 (Dental and Oral Diseases 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 D16.5?

The CMS General Equivalence Mappings map D16.5 to ICD-9-CM 213.1.