Malignant neoplasms of bone and articular cartilage (C40-C41) ICD-10-CM
The C40–C41 section covers malignant neoplasms of bone and articular cartilage with 32 ICD-10-CM diagnosis codes, of which 24 are billable in fiscal year 2026. The section is organized into the 2 code ranges listed below.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- malignant neoplasm of cartilage (articular) (joint)
- malignant neoplasm of periosteum
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Code Ranges in This Section 2 ranges · 32 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| C40 | Malignant neoplasm of bone and articular cartilage of limbs (C40) | 25 | 18 |
| C41 | Malignant neoplasm of bone and articular cartilage of other and unspecified sites (C41) | 7 | 6 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the C40–C41 Code Range
ICD-10 codes C40-C41 are used to classify malignant tumors (cancers) originating in the bones and articular cartilage of limbs and other body sites. These codes cover a variety of primary bone cancers affecting long and short bones of the upper and lower limbs, skull, face, vertebral column, ribs, pelvis, and unspecified sites.
This range includes detailed subcategories identifying specific locations such as the scapula, humerus, hand bones, femur, pelvis, and even overlapping or unspecified limb sites. Synonyms like osteosarcoma, Ewing sarcoma, chondrosarcoma, adamantinoma, chordoma, and malignant giant cell tumor of bone correspond to these codes to assist coders when conditions are described by common names. For example, C40.00 refers to malignant bone cancers of the upper limb including terms such as "Primary Ewing sarcoma of scapula" or "osteosarcoma of humerus," while C41.0 represents tumors of the skull and face bones, including "chordoma" and "malignant odontogenic tumor of upper jaw." This coding chapter helps healthcare providers precisely document, report, and manage primary bone and cartilage malignancies at specific anatomical sites, facilitating accurate clinical communication and billing.
Questions About This Page
How many codes are in the C40-C41 range?
The C40-C41 range contains 32 ICD-10-CM diagnosis codes in FY 2026. 24 of them are billable, and the rest are category headers that organize the section.
What conditions does C40-C41 cover?
The range covers malignant neoplasms of bone and articular cartilage. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
