ICD-10 Code D21.9

Benign neoplasm of connective and other soft tissue, unspecified

Version 2019 Billable Code Neoplasm Benign

Valid for Submission

D21.9 is a billable code used to specify a medical diagnosis of benign neoplasm of connective and other soft tissue, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10: D21.9
Short Description:Benign neoplasm of connective and other soft tissue, unsp
Long Description:Benign neoplasm of connective and other soft tissue, unspecified

Code Classification

  • Neoplasms (C00–D48)
    • Benign neoplasms, except benign neuroendocrine tumors (D10-D36)
      • Other benign neoplasms of connective and other soft tissue (D21)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (first year ICD-10-CM implemented into the HIPAA mandated code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Medical Professionals

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code D21.9 is grouped in the following groups for version MS-DRG V37.0 applicable from 10/01/2020 through 09/30/2020.

  • 564 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH MCC
  • 565 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH CC
  • 566 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITHOUT CC/MCC

Convert D21.9 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 215.9 - Ben neo soft tissue NOS (Approximate Flag)

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Adult rhabdomyoma
  • Angiomyoma of skin
  • Benign connective tissue neoplasm
  • Benign fibrohistiocytic neoplasm of soft tissue of limb
  • Benign neoplasm of blood vessel
  • Benign neoplasm of lymph vessels
  • Benign neoplasm of muscle
  • Benign neoplasm of nail apparatus
  • Benign neoplasm of nail apparatus
  • Benign neoplasm of soft tissue
  • Calcifying aponeurotic fibroma
  • Cutaneous leiomyoma
  • Cystic dermoid choristoma
  • Dermal connective tissue hamartoma
  • Familial multiple leiomyoma cutis
  • Fetal rhabdomyoma
  • Fibroma
  • Fibroma of tendon sheath
  • Fibrous dysplasia of bone with intramuscular myxoma
  • Fibrous hamartoma of infancy
  • Fibrous histiocytoma of tendon sheath
  • Giant cell storiform collagenoma
  • Granular cell tumor
  • Granular cell tumor of skin
  • Hamartoma of muscle
  • Intravascular papillary endothelial hyperplasia
  • Juvenile aponeurotic fibroma
  • Kimura's disease
  • Leiomyoma
  • Multiple piloleiomyoma
  • Myxoma
  • Ossifying fibromyxoid tumor
  • Parachordoma
  • Parasitic fibroid
  • Periungual fibroma
  • Periungual fibroma in tuberous sclerosis
  • Rhabdomyoma
  • Rhabdomyomatous neoplasm
  • Skin tumor of smooth muscle origin
  • Soft tissue chondroma
  • Solitary leiomyoma
  • Storiform collagenoma
  • Subungual fibroma
  • Vascular hamartomas

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code D21.9 are found in the index:


Table of Neoplasms

The code D21.9 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

The Tabular must be reviewed for the complete diagnosis code.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»adipose tissue [See Also: Neoplasm, connective tissue]
C49.4C79.89D21.9D48.1D49.2
»aponeurosis
C49.9C79.89D21.9D48.1D49.2
»connective tissue NEC
C49.9C79.89D21.9D48.1D49.2
»connective tissue NEC
  »extremity
C49.9C79.89D21.9D48.1D49.2
»connective tissue NEC
  »limb NEC
C49.9C79.89D21.9D48.1D49.2
»lymph, lymphatic channel NEC
C49.9C79.89D21.9D48.1D49.2
»lymph, lymphatic channel NEC
  »vessel [See Also: Neoplasm, connective tissue]
C49.9C79.89D21.9D48.1D49.2

Information for Patients


Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Tumors are made up of extra cells. Normally, cells grow and divide to form new cells as your body needs them. When cells grow old, they die, and new cells take their place. Sometimes, this process goes wrong. New cells form when your body does not need them, and old cells do not die when they should. These extra cells can divide without stopping and may form tumor.

Treatment often involves surgery. Benign tumors usually don't grow back.

NIH: National Cancer Institute


[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.