2026 ICD-10-CM Diagnosis Code D16.5Benign neoplasm of lower jaw bone

ICD-10-CM Codes›C00–D49›D10-D36›D16

ICD-10-CM D16.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D16.5 is a billable ICD-10-CM diagnosis code for benign neoplasm of lower jaw bone. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 157 through 159. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D16.5
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of lower jaw bone
Short Description
Benign neoplasm of lower jaw bone
Same as the full description in the CMS dataset.
Parent Code
D16
Benign neoplasm of bone and articular cartilage

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD16Benign neoplasm of bone and articular cartilage
This CodeD16.5Benign neoplasm of lower jaw bone

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Ameloblastoma of jaw
  • Ameloblastoma of mandible
  • Benign neoplasm of articular cartilage
  • Benign neoplasm of mandible
  • Benign odontogenic tumor of lower jaw
  • Benign osteogenic neoplasm of articular cartilage of lower jaw
  • Benign osteogenic neoplasm of bone of head
  • Benign osteogenic neoplasm of bone of lower jaw
  • Boder syndrome
  • Chondroma of bone
  • Enchondroma of bone
  • Enchondroma of mandible
  • Extraosseous calcifying odontogenic cyst
  • Familial gigantiform cementoma of jaw
  • Fibromyxoma of mandible
  • Florid cemento-osseous dysplasia
  • Multicystic intraosseous ameloblastoma
  • Neoplasm of mandibular condyle
  • Odontogenic keratocyst
  • Odontoma of lower jaw
  • Osteoma
  • Osteoma of face
  • Osteoma of mandibular condyle

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Keratocyst of mandible
  • Keratocystic odontogenic tumor of mandible

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Cyst(colloid) (mucous) (simple) (retention)
      • calcifying odontogenic

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Cementoma

    an odontogenic fibroma in which cells have developed into cementoblasts and which consists largely of cementum.

  • Mandible

    the largest and strongest bone of the face constituting the lower jaw. it supports the lower teeth.

  • Osteoblastoma

    a benign, painful, tumor of bone characterized by the formation of osteoid tissue, primitive bone and calcified tissue. it occurs frequently in the spine of young persons. (from dorland, 27th ed; stedman, 25th ed)

  • Osteoma

    a benign tumor composed of bone tissue or a hard tumor of bonelike structure developing on a bone (homoplastic osteoma) or on other structures (heteroplastic osteoma). (from dorland, 27th ed)

  • Osteoma, Osteoid

    a benign osteoblastic tumor with central vascularized nidus surrounded by normal reactive bone. it occurs especially in second decade of life most commonly in the femoral neck but can occur in any bone and any site within a bone.

  • Osteomalacia

    disorder caused by an interruption of the mineralization of organic bone matrix leading to bone softening, bone pain, and weakness. it is the adult form of rickets resulting from disruption of vitamin d; phosphorus; or calcium homeostasis.

  • Benign Neoplasm of Lower Jaw Bone

    a non-metastasizing neoplasm that arises from the lower jaw bone.

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
alveolar › ridge or processC41.1C79.51–D16.5D48.0D49.2
alveolar › ridge or process › lowerC41.1C79.51–D16.5D48.0D49.2
bone (periosteum) › jaw (lower)C41.1C79.51–D16.5D48.0D49.2
bone (periosteum) › mandibleC41.1C79.51–D16.5D48.0D49.2
bone (periosteum) › maxilla, maxillary (superior) › inferiorC41.1C79.51–D16.5D48.0D49.2
jaw › boneC41.1C79.51–D16.5D48.0D49.2
jaw › bone › lowerC41.1C79.51–D16.5––
joint NEC [See Also: Neoplasm, bone] › temporomandibularC41.1C79.51–D16.5D48.0D49.2
mandibleC41.1C79.51–D16.5D48.0D49.2
mandible › alveolar › ridge or processC41.1C79.51–D16.5D48.0D49.2

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D16.5 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
213.1 Ben neo lower jaw bone
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D16.5Overview

Is D16.5 (Benign neoplasm of bone and articular cartilage) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of lower jaw bone on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D16.5 group to?

When benign neoplasm of lower jaw bone is the principal diagnosis on an inpatient stay, it groups to MS-DRG 157, 158, 159, with relative weights from 0.7085 to 1.7168 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D16.5?

Under the General Equivalence Mappings, benign neoplasm of lower jaw bone converts to ICD-9-CM 213.1 (ben neo lower jaw bone). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.