ICD-10 Code C81.12 – Nodular sclerosis Hodgkin lymphoma, intrathoracic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C81.12 – Nodular sclerosis Hodgkin lymphoma, intrathoracic lymph nodes
What it is
This code identifies nodular sclerosis Hodgkin lymphoma involving intrathoracic lymph nodes, such as mediastinal or hilar nodes. Use it when the record specifies this histologic subtype and nodal site.
Clinical signs
Clinical features vary; refer to documentation. Commonly, Hodgkin lymphoma is confirmed by pathology and may present with enlarged thoracic lymph nodes, chest symptoms, or systemic “B” symptoms.
When to use this code
Use C81.12 when the provider documents nodular sclerosis Hodgkin lymphoma with involvement of intrathoracic lymph nodes. It is appropriate for confirmed primary site coding, staging, and problem lists when the site is clearly stated.
Check documentation if the record mentions Hodgkin lymphoma without specifying subtype or thoracic nodal involvement. Code the documented site and morphology only when both are supported.
Do not use for
Do not use this code for other Hodgkin lymphoma subtypes or for lymph node involvement outside the thorax. If the site is unspecified, or documentation is unclear, check documentation.
Coding tip
Verify both the nodular sclerosis subtype and intrathoracic nodal site before assigning C81.12.