C83.99 – Non-follicular (diffuse) lymphoma, unspecified, extranodal and solid organ sites
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue
ICD-10-CM code
C83.99
- Code
C83.99(claims format:C8399)- Description
- Non-follicular (diffuse) lymphoma, unspecified, extranodal and solid organ sites
- Short description
- Non-follic lymphoma, unsp, extrnod and solid organ sites
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
- Parent codes
- C83 › C83.9
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
C83 – Non-follicular lymphoma
Excludes1 (not coded here):
- personal history of non-Hodgkin lymphoma (Z85.72)
Block C81-C96
Related codes in C83.9
- C83.90 – Non-follicular (diffuse) lymphoma, unspecified, unspecified siteBillable
- C83.91 – Non-follicular (diffuse) lymphoma, unspecified, lymph nodes of head, face, and neckBillable
- C83.92 – Non-follicular (diffuse) lymphoma, unspecified, intrathoracic lymph nodesBillable
- C83.93 – Non-follicular (diffuse) lymphoma, unspecified, intra-abdominal lymph nodesBillable
- C83.94 – Non-follicular (diffuse) lymphoma, unspecified, lymph nodes of axilla and upper limbBillable
- C83.95 – Non-follicular (diffuse) lymphoma, unspecified, lymph nodes of inguinal region and lower limbBillable
- C83.96 – Non-follicular (diffuse) lymphoma, unspecified, intrapelvic lymph nodesBillable
- C83.97 – Non-follicular (diffuse) lymphoma, unspecified, spleenBillable
- C83.98 – Non-follicular (diffuse) lymphoma, unspecified, lymph nodes of multiple sitesBillable
- C83.9A – Non-follicular (diffuse) lymphoma, unspecified, in remissionBillable
Frequently asked questions
What is ICD-10 code C83.99?
C83.99 is the ICD-10-CM code for non-follicular (diffuse) lymphoma, unspecified, extranodal and solid organ sites, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).
Is C83.99 a billable code?
Yes. C83.99 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does C83.99 belong to?
It belongs to category C83 – Non-follicular lymphoma.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.