2027 ICD-10-CM Diagnosis Code M79.81Nontraumatic hematoma of soft tissue
ICD-10-CM Codes›M00–M99›M70-M79›M79
- Billable — Valid for Submission
- Not Chronic
M79.81 is a billable ICD-10-CM diagnosis code for nontraumatic hematoma of soft tissue. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 555 through 556. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified connective tissue disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Colonic hematoma
- Esophageal hematoma
- Hematoma
- Hematoma of scrotum
- Hemorrhage of colon
- Hemorrhage of muscle
- Hemorrhage of scrotum
- Intermuscular hematoma
- Intramural esophageal hematoma
- Intramuscular hematoma
- Left lower limb amputation stump hematoma
- Left upper limb amputation stump hematoma
- Non-traumatic hematoma of skin and subcutaneous tissue
- Nontraumatic hematoma of soft tissue
- Nontraumatic intramuscular hematoma
- Paroxysmal hematoma of the finger
- Rectal hematoma
- Right lower limb amputation stump hematoma
- Right upper limb amputation stump hematoma
- Scrotal hematoma due to non-traumatic cause
- Subcutaneous dissecting hematoma
- Subcutaneous hematoma
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M79.81: its own notes plus those printed at M79 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Nontraumatic hematoma of muscle
- Nontraumatic seroma of muscle and soft tissue
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name M79.81, its category, or a range that includes it.
Excludes2 2
These codes carry an Excludes2 note naming M79.81: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Hematoma (traumatic) (skin surface intact) See Also: Contusion;
muscle M79.81
soft tissue M79.81
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert M79.81 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M79.81Overview
What is the ICD-10 code for nontraumatic hematoma of soft tissue?
The ICD-10-CM code for nontraumatic hematoma of soft tissue is M79.81 (sometimes written as M7981). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M79.81 (Other specified soft tissue disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report nontraumatic hematoma of soft tissue on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M79.81 group to?
When nontraumatic hematoma of soft tissue is the principal diagnosis on an inpatient stay, it groups to MS-DRG 555, 556, with relative weights from 0.8210 to 1.2908 depending on complications. Higher weights mean higher Medicare reimbursement.
Can M79.81 be reported with F45.8?
Not as a rule. The Excludes1 note at M79, which applies to M79.81, lists "psychogenic rheumatism (F45.8)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of M79.81?
Under the General Equivalence Mappings, nontraumatic hematoma of soft tissue converts to ICD-9-CM 729.92 (nontrauma hema soft tiss). The mapping is a direct match.
