2027 ICD-10-CM Diagnosis Code M67.449Ganglion, unspecified hand
ICD-10-CM Codes›M00–M99›M65-M67›M67
- Billable — Valid for Submission
- Not Chronic
M67.449 is a billable ICD-10-CM diagnosis code for ganglion, unspecified hand. 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 cyst of finger. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Tendon and synovial disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cyst of finger
- Cyst of tendon sheath
- Digital mucous cyst
- Ganglion cyst of tendon sheath
- Ganglion cyst of tendon sheath of hand
- Ganglion of flexor tendon sheath of finger
- Ganglion of hand
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M67.449: its own notes plus those printed at M67.4, M67, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
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 M67.449, its category, or a range that includes it.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Ganglion Cysts
nodular tumor-like lesions or mucoid flesh, arising from tendon sheaths, ligaments, or joint capsule, especially of the hands, wrists, or feet. they are not true cysts as they lack epithelial wall. they are distinguished from synovial cysts by the lack of communication with a joint cavity or the synovial membrane.
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 M67.449 to ICD-9-CMHistory
Code HistoryHistory
Questions About M67.449Overview
What is the ICD-10 code for ganglion, unspecified hand?
The ICD-10-CM code for ganglion, unspecified hand is M67.449 (sometimes written as M67449). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M67.449 (Ganglion, hand) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report ganglion, unspecified hand on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M67.449 group to?
When ganglion, unspecified hand 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.
Can M67.449 be reported with A66.6?
Not as a rule. The Excludes1 note at M67.4, which applies to M67.449, lists "ganglion in yaws (A66.6)". 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 M67.449?
Under the General Equivalence Mappings, ganglion, unspecified hand converts to ICD-9-CM 727.41 (ganglion of joint) and 727.42 (ganglion of tendon). The mapping is approximate, so confirm the match fits the documentation.
