Malignant neoplasms of bone and articular cartilage (C40-C41)

Instructional notes

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding benign and malignant neoplasms: using the Neoplasm Table, sequencing primary and secondary sites, treatment encounters, complications, and current cancer versus personal history.

• Admission/Encounter for treatment of primary site (page 33)
• Admission/Encounter for treatment of secondary site (page 33)
• Coding and sequencing of complications (page 34)
• Primary malignancy previously excised (page 34)
• Admissions/Encounters involving antineoplastic chemotherapy, immunotherapy and radiation therapy (page 35)
• Admission/encounter to determine extent of malignancy (page 36)
• Symptoms, signs, and abnormal findings listed in Chapter 18 associated with neoplasms (page 36)
• Admission/encounter for pain control/management (page 36)

Read Section I.C.2 (page 32), 12 more topics

All codes under C40-C41

C40-C41 can't be used on a claim. Pick a billable code below; grey headings group them.

• C40Malignant neoplasm of bone and articular cartilage of limbs
• C40.0Malignant neoplasm of scapula and long bones of upper limb
• C40.00Malignant neoplasm of scapula and long bones of unspecified upper limb
• C40.01Malignant neoplasm of scapula and long bones of right upper limb
• C40.02Malignant neoplasm of scapula and long bones of left upper limb
• C40.1Malignant neoplasm of short bones of upper limb
• C40.10Malignant neoplasm of short bones of unspecified upper limb
• C40.11Malignant neoplasm of short bones of right upper limb
• C40.12Malignant neoplasm of short bones of left upper limb
• C40.2Malignant neoplasm of long bones of lower limb
• C40.20Malignant neoplasm of long bones of unspecified lower limb
• C40.21Malignant neoplasm of long bones of right lower limb
• C40.22Malignant neoplasm of long bones of left lower limb
• C40.3Malignant neoplasm of short bones of lower limb
• C40.30Malignant neoplasm of short bones of unspecified lower limb
• C40.31Malignant neoplasm of short bones of right lower limb
• C40.32Malignant neoplasm of short bones of left lower limb
• C40.8Malignant neoplasm of overlapping sites of bone and articular cartilage of limb
• C40.80Malignant neoplasm of overlapping sites of bone and articular cartilage of unspecified limb
• C40.81Malignant neoplasm of overlapping sites of bone and articular cartilage of right limb
• C40.82Malignant neoplasm of overlapping sites of bone and articular cartilage of left limb
• C40.9Malignant neoplasm of unspecified bones and articular cartilage of limb
• C40.90Malignant neoplasm of unspecified bones and articular cartilage of unspecified limb
• C40.91Malignant neoplasm of unspecified bones and articular cartilage of right limb
• C40.92Malignant neoplasm of unspecified bones and articular cartilage of left limb
• C41Malignant neoplasm of bone and articular cartilage of other and unspecified sites
• C41.0Malignant neoplasm of bones of skull and face
• C41.1Malignant neoplasm of mandible
• C41.2Malignant neoplasm of vertebral column
• C41.3Malignant neoplasm of ribs, sternum and clavicle
• C41.4Malignant neoplasm of pelvic bones, sacrum and coccyx
• C41.9Malignant neoplasm of bone and articular cartilage, unspecified

C40-C41 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.

Other codes that refer to C40-C41

Notes on these codes point to C40-C41.

• C49 Excludes1: articular (C40-C41)
• Z85.83 Includes: Conditions classifiable to C40-C41; C45-C49

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.