2027 ICD-10-CM Diagnosis Code M79.89Other specified soft tissue disorders
ICD-10-CM Codes›M00–M99›M70-M79›M79
- Billable — Valid for Submission
- Not Chronic
M79.89 is a billable ICD-10-CM diagnosis code for other specified soft tissue disorders. 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.
- Cheiromegaly
- Disorder of fascia
- Disorder of oral soft tissues
- Disorder of rectus sheath
- Distribution of body fat loss - finding
- Fat necrosis
- Fat necrosis of subcutaneous tissue
- Finger joint - soft tissue swelling
- Infection of soft tissue of cervical spine
- Injury of soft tissue
- Leg swelling symptom
- Loss of body fat unevenly distributed
- Necrosis of subcutaneous tissue
- Necrotizing soft tissue infection
- Nodular fat necrosis
- Oral frictional keratosis
- Polyalgia
- Reactive fibrous tissue proliferation
- Soft tissue crepitus
- Soft tissue impingement on teeth
- Soft tissue swelling
- Soft tissue texture changes
- Structural abnormality of adipose tissue
- Structural abnormality of subpleural tissue
- Swelling of bilateral feet
- Swelling of bilateral lower limbs
- Swelling of finger
- Swelling of finger joint
- Swelling of left foot
- Swelling of left lower limb
- Swelling of limb
- Swelling of lower limb
- Swelling of right foot
- Swelling of right lower limb
- Swelling of thumb joint
- Swelling of toe joint
- Swelling of toe of bilateral feet
- Swelling of toe of left foot
- Swelling of toe of right foot
- Swollen thumb
- Thumb joint - soft tissue swelling
- Tissue bogginess
- Tissue texture abnormality
- Toe joint - soft tissue swelling
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M79.89: 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.
- Polyalgia
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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Cheiromegaly M79.89
Disorder (of) See Also: Disease;
specified type NEC M79.89
Polyalgia M79.89
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Connective Tissue Disorders
Your connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M79.89 to ICD-9-CMHistory
Code HistoryHistory
Questions About M79.89Overview
What is the ICD-10 code for other specified soft tissue disorders?
The ICD-10-CM code for other specified soft tissue disorders is M79.89 (sometimes written as M7989). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M79.89 (Other specified soft tissue disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other specified soft tissue disorders on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M79.89 group to?
When other specified soft tissue disorders 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 M79.89 be reported with F45.8?
Not as a rule. The Excludes1 note at M79, which applies to M79.89, 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 M79.89?
Under the General Equivalence Mappings, other specified soft tissue disorders converts to ICD-9-CM 729.81 (swelling of limb) and 729.99 (soft tissue disorder NEC). The mapping is approximate, so confirm the match fits the documentation.
