2027 ICD-10-CM Diagnosis Code M72.9Fibroblastic disorder, unspecified
ICD-10-CM Codes›M00–M99›M70-M79›M72
- Billable — Valid for Submission
- Not Chronic
M72.9 is a billable ICD-10-CM diagnosis code for fibroblastic disorder, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 557 through 558. Coders also document this condition as abscess of abdominal wall. 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.
- Abscess of abdominal wall
- Cranial fasciitis
- Disorder of rectus sheath
- Fasciitis
- Fibromatosis
- Musculoskeletal fibromatosis
- Nodular fasciitis
- Rectus sheath abscess
- Superficial fibromatosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M72.9: its own notes plus those printed at M72 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.
- Fasciitis NOS
- Fibromatosis NOS
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.
Disorder (of) See Also: Disease;
fibroblastic M72.9
Fasciitis M72.9
Fibromatosis M72.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Fasciitis
inflammation of the fascia. there are three major types: 1, eosinophilic fasciitis, an inflammatory reaction with eosinophilia, producing hard thickened skin with an orange-peel configuration suggestive of scleroderma and considered by some a variant of scleroderma; 2, necrotizing fasciitis (fasciitis, necrotizing), a serious fulminating infection (usually by a beta hemolytic streptococcus) causing extensive necrosis of superficial fascia; 3, nodular/pseudosarcomatous /proliferative fasciitis, characterized by a rapid growth of fibroblasts with mononuclear inflammatory cells and proliferating capillaries in soft tissue, often the forearm; it is not malignant but is sometimes mistaken for fibrosarcoma.
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 M72.9 to ICD-9-CMHistory
Code HistoryHistory
Questions About M72.9Overview
What is the ICD-10 code for fibroblastic disorder, unspecified?
The ICD-10-CM code for fibroblastic disorder, unspecified is M72.9 (sometimes written as M729). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M72.9 (Fibroblastic disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report fibroblastic disorder, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M72.9 group to?
When fibroblastic disorder, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8873 to 1.4883 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M72.9?
Under the General Equivalence Mappings, fibroblastic disorder, unspecified converts to ICD-9-CM 728.79 (fibromatoses NEC) and 729.4 (fasciitis NOS). The mapping is approximate, so confirm the match fits the documentation.
