2026 ICD-10-CM Diagnosis Code D21.5Benign neoplasm of connective and other soft tissue of pelvis
ICD-10-CM Codes›C00–D49›D10-D36›D21
- Billable — Valid for Submission
- Not Chronic
D21.5 is a billable ICD-10-CM diagnosis code for benign neoplasm of connective and other soft tissue of pelvis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Benign neoplasm of blood vessel of buttock
- Benign neoplasm of blood vessel of inguinal region
- Benign neoplasm of blood vessel of lower limb
- Benign neoplasm of blood vessel of pelvis
- Benign neoplasm of blood vessel of perineum
- Benign neoplasm of coccygeal body
- Benign neoplasm of inguinal region
- Benign neoplasm of muscle of buttock
- Benign neoplasm of muscle of hip
- Benign neoplasm of muscle of inguinal region
- Benign neoplasm of muscle of lower limb
- Benign neoplasm of muscle of pelvis
- Benign neoplasm of muscle of perineum
- Benign neoplasm of muscle of trunk
- Benign neoplasm of paraganglion
- Benign neoplasm of skin of buttock
- Benign neoplasm of soft tissues of buttock
- Benign neoplasm of soft tissues of inguinal region
- Benign neoplasm of soft tissues of pelvis
- Benign neoplasm of soft tissues of perineum
- Neoplasm of blood vessel of buttock
- Neoplasm of blood vessel of inguinal region
- Neoplasm of blood vessel of pelvis
- Neoplasm of blood vessel of perineum
- Neoplasm of coccygeal body
- Neoplasm of muscle of buttock
- Neoplasm of muscle of hip
- Neoplasm of muscle of inguinal region
- Neoplasm of muscle of pelvis
- Neoplasm of muscle of perineum
- Neoplasm of skin of buttock
- Neoplasm of soft tissues of inguinal region
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| coccygeal | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| coccygeal › body or glomus | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › buttock | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › extrarectal | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › gluteal region | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › groin | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › iliopsoas muscle | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › inguinal (canal) (region) | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › ischiorectal fossa | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › nates | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › pararectal | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › para-urethral | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › paravaginal | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › pelvis (floor) | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › perineum | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › perirectal (tissue) | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › periurethral (tissue) | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › presacral | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › rectovaginal septum or wall | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › rectovesical | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › sacrococcygeal region | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| connective tissue NEC › vesicorectal | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| glomus | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
| glomus › coccygeal | C49.5 | C79.89 | – | D21.5 | D48.1 | D49.2 |
Patient EducationClinical
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.
Read the full article at MedlinePlus
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Convert D21.5 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D21.5Overview
Is D21.5 (Other benign neoplasms of connective and other soft tissue) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of connective and other soft tissue of pelvis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D21.5 group to?
When benign neoplasm of connective and other soft tissue of pelvis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D21.5?
Under the General Equivalence Mappings, benign neoplasm of connective and other soft tissue of pelvis converts to ICD-9-CM 215.6 (ben neo soft tis pelvis). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
