ICD-10-CM Tabular Index · Chapter 2 · FY 2027 C40

Malignant neoplasm of bone and articular cartilage of limbs (C40) ICD-10-CM

The C40 code range covers malignant neoplasm of bone and articular cartilage of limbs with 25 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027

Diagnosis Codes

Billable Codes

C40

Code Range

C40–C41

Parent Section

Use Additional Code

The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

code to identify major osseous defect, if applicable M89.7

ICD-10-CM

Codes in the C40 Range 25 codes · 18 billable

25 of 25 shown

C40 Malignant neoplasm of bone and articular cartilage of limbsNon-billable
C40.0 Malignant neoplasm of scapula and long bones of upper limbNon-billable
C40.00 Malignant neoplasm of scapula and long bones of unspecified upper limb
C40.01 Malignant neoplasm of scapula and long bones of right upper limb
C40.02 Malignant neoplasm of scapula and long bones of left upper limb
C40.1 Malignant neoplasm of short bones of upper limbNon-billable
C40.10 Malignant neoplasm of short bones of unspecified upper limb
C40.11 Malignant neoplasm of short bones of right upper limb
C40.12 Malignant neoplasm of short bones of left upper limb
C40.2 Malignant neoplasm of long bones of lower limbNon-billable
C40.20 Malignant neoplasm of long bones of unspecified lower limb
C40.21 Malignant neoplasm of long bones of right lower limb
C40.22 Malignant neoplasm of long bones of left lower limb
C40.3 Malignant neoplasm of short bones of lower limbNon-billable
C40.30 Malignant neoplasm of short bones of unspecified lower limb
C40.31 Malignant neoplasm of short bones of right lower limb
C40.32 Malignant neoplasm of short bones of left lower limb
C40.8 Malignant neoplasm of overlapping sites of bone and articular cartilage of limbNon-billable
C40.80 Malignant neoplasm of overlapping sites of bone and articular cartilage of unspecified limb
C40.81 Malignant neoplasm of overlapping sites of bone and articular cartilage of right limb
C40.82 Malignant neoplasm of overlapping sites of bone and articular cartilage of left limb
C40.9 Malignant neoplasm of unspecified bones and articular cartilage of limbNon-billable
C40.90 Malignant neoplasm of unspecified bones and articular cartilage of unspecified limb
C40.91 Malignant neoplasm of unspecified bones and articular cartilage of right limb
C40.92 Malignant neoplasm of unspecified bones and articular cartilage of left limb

About the C40 Code Range

These are cancers of the bones and joint cartilage in the arms and legs.

The subdivisions separate the shoulder blade and long upper-limb bones (C40.0) from short upper-limb bones (C40.1). Lower-limb subdivisions distinguish long bones (C40.2) from short bones (C40.3). Other subdivisions identify overlapping sites of bone and joint cartilage (C40.8) or an unspecified bone or joint cartilage site (C40.9). Each subdivision then distinguishes right, left, or unspecified limb.

Questions About This Page

How many billable codes are in the C40 range?

Of the 25 codes in this range, 18 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.

What does the C40 range classify?

The range classifies malignant neoplasm of bone and articular cartilage of limbs. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM Chapters All of Chapter 2 ICD-10-CM Code Lookup MS-DRG Reference Medicare Code Edits POA Exempt Codes

Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.