2026 ICD-10-CM Diagnosis Code C41.0Malignant neoplasm of bones of skull and face
ICD-10-CM Codes›C00–D49›C40-C41›C41
- Billable — Valid for Submission
- Chronic Condition
C41.0 is a billable ICD-10-CM diagnosis code for malignant neoplasm of bones of skull and face. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 542 through 544. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bone cancer.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Carcinoma of maxilla
- Chondrosarcoma of skull
- Chordoma of clivus
- Gnathic osteosarcoma
- Malignant neoplasm of bones of skull and face
- Malignant neoplasm of hard palate
- Malignant neoplasm of malar bone
- Malignant neoplasm of mastoid
- Malignant neoplasm of maxillofacial bone
- Malignant neoplasm of middle ear and mastoid
- Malignant neoplasm of nasal septum
- Malignant neoplasm of nasal skeleton
- Malignant neoplasm of orbital bone
- Malignant odontogenic tumor of upper jaw
- Mass of parietal bone of skull
- Neoplasm of ethmoid bone
- Neoplasm of frontal bone
- Neoplasm of middle ear and mastoid
- Neoplasm of nasal bone
- Neoplasm of occipital bone
- Neoplasm of palatine bone
- Neoplasm of parietal bone
- Neoplasm of sphenoid bone
- Neoplasm of vomer
- Neoplasm of zygomatic bone
- Osteosarcoma of bone of head
- Primary chordoma
- Primary chordoma of bone of skull
- Primary chordoma of clivus
- Primary malignant neoplasm of bone of face
- Primary malignant neoplasm of bone of skull
- Primary malignant neoplasm of cheek
- Primary malignant neoplasm of ethmoid bone
- Primary malignant neoplasm of frontal bone
- Primary malignant neoplasm of hard palate
- Primary malignant neoplasm of maxilla
- Primary malignant neoplasm of nasal bone
- Primary malignant neoplasm of occipital bone
- Primary malignant neoplasm of palatine bone
- Primary malignant neoplasm of parietal bone
- Primary malignant neoplasm of septum of nose
- Primary malignant neoplasm of sphenoid bone
- Primary malignant neoplasm of temporal bone
- Primary malignant neoplasm of vomer
- Primary malignant neoplasm of zygomatic bone
- Primary malignant odontogenic tumor of upper jaw
- Primary osteosarcoma of bone of head
- Sarcoma of skull
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Malignant neoplasm of maxilla (superior)
- Malignant neoplasm of orbital bone
Type 2 Excludes
- carcinoma, any type except intraosseous or odontogenic of:
- maxillary sinus C31.0
- upper jaw C03.0
- malignant neoplasm of jaw bone lower C41.1
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Adamantinoma - See Also: Cyst, calcifying odontogenic;
- upper - C41.0
- Ameloblastoma - See Also: Cyst, calcifying odontogenic;
- upper - C41.0
- Carcinoma (malignant) - See Also: Neoplasm, by site, malignant;
- ameloblastic - C41.1
- upper jaw (bone) - C41.0
- intraosseous - C41.1
- upper jaw (bone) - C41.0
- odontogenic - C41.1
- upper jaw (bone) - C41.0
- Fibrosarcoma - See Also: Neoplasm, connective tissue, malignant;
- ameloblastic - C41.1
- upper jaw (bone) - C41.0
- odontogenic - C41.1
- upper jaw (bone) - C41.0
- Odontosarcoma, ameloblastic - C41.1
- upper jaw (bone) - C41.0
- Sarcoma (of) - See Also: Neoplasm, connective tissue, malignant;
- ameloblastic - C41.1
- upper jaw (bone) - C41.0
- odontogenic - C41.1
- upper jaw (bone) - C41.0
- Tumor - See Also: Neoplasm, unspecified behavior, by site;
- odontogenic (adenomatoid) (benign) (calcifying epithelial) (keratocystic) (squamous) - See: Cyst, calcifying odontogenic;
- upper jaw (bone) - C41.0
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Adamantinoma
- malignant
- jaw (bone) (lower)
- upper
- Ameloblastoma
- malignant
- jaw (bone) (lower)
- upper
- Carcinoma(malignant)
- ameloblastic
- upper jaw (bone)
- Carcinoma(malignant)
- intraosseous
- upper jaw (bone)
- Carcinoma(malignant)
- odontogenic
- upper jaw (bone)
- Fibrosarcoma
- ameloblastic
- upper jaw (bone)
- Fibrosarcoma
- odontogenic
- upper jaw (bone)
- Odontosarcoma, ameloblastic
- upper jaw (bone)
- Sarcoma(of)
- ameloblastic
- upper jaw (bone)
- Sarcoma(of)
- odontogenic
- upper jaw (bone)
- Tumor
- odontogenic (adenomatoid) (benign) (calcifying epithelial) (keratocystic) (squamous)
- malignant
- upper jaw (bone)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| alveolar › ridge or process › upper | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › calvarium | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › clivus | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › cranial | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › ethmoid (labyrinth) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › face | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › frontal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › hyoid | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › malar | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › mastoid | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › maxilla, maxillary (superior) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › nose, nasal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › occipital | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › orbit | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › parietal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › sella turcica | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › skull | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › sphenoid | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › temporal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › turbinate | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › vomer | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › zygomatic | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| calvarium | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| clivus | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| ethmoid (sinus) › bone or labyrinth | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| frontal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| frontal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| jaw › bone › upper | C41.0 | C79.51 | – | D16.4 | – | – |
| malar | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| mastoid (air cells) (antrum) (cavity) › bone or process | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| maxilla, maxillary (superior) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| maxilla, maxillary (superior) › alveolar › ridge or process (carcinoma) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| nose, nasal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| nose, nasal › turbinate (mucosa) › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| occipital | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| occipital › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| orbit › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| parietal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| parietal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| sella turcica › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| sinus (accessory) › bone (any) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| skull | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| sphenoid › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| temporal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| temporal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| turbinate (bone) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| vomer | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
Patient EducationClinical
Bone Cancer
Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another part of the body is more common.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C41.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About C41.0Overview
Is C41.0 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report malignant neoplasm of bones of skull and face on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does C41.0 group to?
When malignant neoplasm of bones of skull and face is the principal diagnosis on an inpatient stay, it groups to MS-DRG 542, 543, 544, with relative weights from 0.7546 to 1.7665 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of C41.0?
Under the General Equivalence Mappings, malignant neoplasm of bones of skull and face converts to ICD-9-CM 170.0 (mal neo skull/face bone). The mapping is a direct match.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
