ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group D19 includes benign neoplasms of mesothelial tissue, such as benign mesothelioma and other nonmalignant tumors arising from the pleura, peritoneum, or pericardium. These ICD-10-CM diagnosis codes are used to document clinical encounters for nonmalignant mesothelial growths, capturing organ involvement and disease behavior relevant to management and follow-up. Accurate coding within the ICD-10-CM D19 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM D19: Benign Neoplasm Of Mesothelial Tissue Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group D19 covers benign tumors arising from mesothelial cells that line body cavities such as the pleura, peritoneum, and pericardium. These diagnoses represent nonmalignant proliferations of mesothelial tissue and are typically managed differently than malignant mesothelioma. Accurate coding matters for correct claim processing and for reflecting the clinical course and resource use associated with benign mesothelial neoplasms.

When to Use

Use a code from this group when a clinician documents a confirmed benign mesothelial tumor or benign mesothelioma based on pathology, imaging, or clinical diagnosis. Assign codes to reflect the specific anatomic site and clinical scenario to support accurate recordkeeping and reimbursement.

ICD-10-CM Codes

4 rows

ICD-10-CM Code	Description
D19.0	Benign neoplasm of mesothelial tissue of pleura
D19.1	Benign neoplasm of mesothelial tissue of peritoneum
D19.7	Benign neoplasm of mesothelial tissue of other sites
D19.9	Benign neoplasm of mesothelial tissue, unspecified

DRG Codes

14 rows

DRG Code	Description
180	Respiratory Neoplasms with MCC
181	Respiratory Neoplasms with CC
182	Respiratory Neoplasms without CC/MCC
393	Other Digestive System Diagnoses with MCC
394	Other Digestive System Diagnoses with CC
395	Other Digestive System Diagnoses without CC/MCC
826	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with MCC
827	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with CC
828	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures without CC/MCC
829	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures with CC/MCC
830	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures without CC/MCC
843	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with MCC
844	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with CC
845	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses without CC/MCC

Typical Clinical Scenarios

An elderly patient presents to the emergency department with progressive abdominal distension and discomfort over weeks; imaging (CT abdomen/pelvis) reveals a large unilateral omental-based cystic mass consistent with a benign mesothelial neoplasm of the peritoneum, and surgical oncology is consulted for planned resection. A diagnosis from this group is assigned to capture the benign mesothelial origin of the resected peritoneal lesion. Typical codes: D19.0, D19.9
A middle-aged woman with a history of recurrent pleural effusions undergoes thoracoscopic biopsy after persistent dyspnea and non-diagnostic fluid studies; pathology reports a benign mesothelial proliferation of the pleura (localized mesothelial tumor) without atypia. This outpatient surgical pathology diagnosis is coded to describe the benign mesothelial tumor of the pleural lining as the reason for the procedure and follow-up. Typical codes: D19.1, D19.9
A patient with chronic peritoneal dialysis develops a slow-growing, well-circumscribed mesothelial nodule on the serosal surface noted incidentally during a planned catheter revision; the lesion is biopsied and reported as a benign mesothelial tumor of the peritoneum, considered a comorbidity affecting the surgical field. The benign mesothelial lesion code is assigned to document the benign neoplasm encountered during management of the primary dialysis-related issue. Typical codes: D19.0, D19.7

ICD-10-CM Code For Benign Neoplasm Of Mouth And Pharynx: Group Overview

D11-BENIGN-NEOPLASM-MAJOR-SALIVARY-GLANDS

ICD-10-CM Code For Benign Neoplasm Of Major Salivary Glands: Group Overview

D12-BENIGN-NEOPLASM-COLON-RECTUM-ANUS

ICD-10-CM Code For Benign Neoplasm Of Colon Rectum Anus And Anal Canal: Group Overview

D13-BENIGN-NEOPLASM-OTHER-DIGESTIVE

ICD-10-CM Code For Benign Neoplasm Of Other And Ill-Defined Parts Of Digestive System: Group Overview

D14-BENIGN-MIDDLE-EAR-AND-RESPIRATORY-NEOPLASMS

ICD-10-CM Code For Benign Neoplasm Of Middle Ear And Respiratory System: Group Overview

D15-BENIGN-NEOPLASM-INTRATHORACIC-ORGANS

ICD-10-CM Code For Benign Neoplasm Of Other And Unspecified Intrathoracic Organs: Group Overview

D16-BENIGN-NEOPLASM-OF-BONE

ICD-10-CM Code For Benign Neoplasm Of Bone And Articular Cartilage: Group Overview

D17-BENIGN-LIPOMATOUS-NEOPLASM

ICD-10-CM Code For Benign Lipomatous Neoplasm: Group Overview

D18-HEMANGIOMA-AND-LYMPHANGIOMA

ICD-10-CM Code For Hemangioma And Lymphangioma, Any Site: Group Overview

D20-BENIGN-SOFT-TISSUE-RETROPERITONEUM

ICD-10-CM Code For Benign Neoplasm Of Soft Tissue Of Retroperitoneum And Peritoneum: Group Overview

Showing 1–10 of 26

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

4 rows

ICD-10-CM Code	Description
D19.0	Benign neoplasm of mesothelial tissue of pleura
D19.1	Benign neoplasm of mesothelial tissue of peritoneum
D19.7	Benign neoplasm of mesothelial tissue of other sites
D19.9	Benign neoplasm of mesothelial tissue, unspecified

DRG Codes

14 rows

DRG Code	Description
180	Respiratory Neoplasms with MCC
181	Respiratory Neoplasms with CC
182	Respiratory Neoplasms without CC/MCC
393	Other Digestive System Diagnoses with MCC
394	Other Digestive System Diagnoses with CC
395	Other Digestive System Diagnoses without CC/MCC
826	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with MCC
827	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with CC
828	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures without CC/MCC
829	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures with CC/MCC
830	Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures without CC/MCC
843	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with MCC
844	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with CC
845	Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses without CC/MCC

Typical Clinical Scenarios

An elderly patient presents to the emergency department with progressive abdominal distension and discomfort over weeks; imaging (CT abdomen/pelvis) reveals a large unilateral omental-based cystic mass consistent with a benign mesothelial neoplasm of the peritoneum, and surgical oncology is consulted for planned resection. A diagnosis from this group is assigned to capture the benign mesothelial origin of the resected peritoneal lesion. Typical codes: D19.0, D19.9
A middle-aged woman with a history of recurrent pleural effusions undergoes thoracoscopic biopsy after persistent dyspnea and non-diagnostic fluid studies; pathology reports a benign mesothelial proliferation of the pleura (localized mesothelial tumor) without atypia. This outpatient surgical pathology diagnosis is coded to describe the benign mesothelial tumor of the pleural lining as the reason for the procedure and follow-up. Typical codes: D19.1, D19.9
A patient with chronic peritoneal dialysis develops a slow-growing, well-circumscribed mesothelial nodule on the serosal surface noted incidentally during a planned catheter revision; the lesion is biopsied and reported as a benign mesothelial tumor of the peritoneum, considered a comorbidity affecting the surgical field. The benign mesothelial lesion code is assigned to document the benign neoplasm encountered during management of the primary dialysis-related issue. Typical codes: D19.0, D19.7

ICD-10-CM Code For Benign Neoplasm Of Mouth And Pharynx: Group Overview

D11-BENIGN-NEOPLASM-MAJOR-SALIVARY-GLANDS

ICD-10-CM Code For Benign Neoplasm Of Major Salivary Glands: Group Overview

D12-BENIGN-NEOPLASM-COLON-RECTUM-ANUS

ICD-10-CM Code For Benign Neoplasm Of Colon Rectum Anus And Anal Canal: Group Overview

D13-BENIGN-NEOPLASM-OTHER-DIGESTIVE

ICD-10-CM Code For Benign Neoplasm Of Other And Ill-Defined Parts Of Digestive System: Group Overview

D14-BENIGN-MIDDLE-EAR-AND-RESPIRATORY-NEOPLASMS

ICD-10-CM Code For Benign Neoplasm Of Middle Ear And Respiratory System: Group Overview

D15-BENIGN-NEOPLASM-INTRATHORACIC-ORGANS

ICD-10-CM Code For Benign Neoplasm Of Other And Unspecified Intrathoracic Organs: Group Overview

D16-BENIGN-NEOPLASM-OF-BONE

ICD-10-CM Code For Benign Neoplasm Of Bone And Articular Cartilage: Group Overview

D17-BENIGN-LIPOMATOUS-NEOPLASM

ICD-10-CM Code For Benign Lipomatous Neoplasm: Group Overview

D18-HEMANGIOMA-AND-LYMPHANGIOMA

ICD-10-CM Code For Hemangioma And Lymphangioma, Any Site: Group Overview

D20-BENIGN-SOFT-TISSUE-RETROPERITONEUM

ICD-10-CM Code For Benign Neoplasm Of Soft Tissue Of Retroperitoneum And Peritoneum: Group Overview

Showing 1–10 of 26

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview

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ICD-10-CM D19: Benign Neoplasm Of Mesothelial Tissue Overview

ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview

Sign up for ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview policy alerts

ICD-10-CM D19: Benign Neoplasm Of Mesothelial Tissue Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview

Sign up for ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview policy alerts

ICD-10-CM D19: Benign Neoplasm Of Mesothelial Tissue Overview

ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview

Sign up for ICD-10-CM Code For Benign Neoplasm Of Mesothelial Tissue: Group Overview policy alerts

ICD-10-CM D19: Benign Neoplasm Of Mesothelial Tissue Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which diagnoses are included in the ICD-10-CM D19 group?

How does using `D19` codes affect claim adjudication?

What clinical sites are specified by individual `D19` codes?

Are benign mesothelial neoplasms managed differently than malignant mesothelioma according to the overview?

Which related DRGs are associated with the D19 group for reimbursement mapping?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which diagnoses are included in the ICD-10-CM D19 group?

How does using `D19` codes affect claim adjudication?

What clinical sites are specified by individual `D19` codes?

Are benign mesothelial neoplasms managed differently than malignant mesothelioma according to the overview?

Which related DRGs are associated with the D19 group for reimbursement mapping?

References