2027 ICD-10-CM Diagnosis Code M13.88Other specified arthritis, other site
ICD-10-CM Codes›M00–M99›M05-M14›M13
- Billable — Valid for Submission
- Not Chronic
M13.88 is a billable ICD-10-CM diagnosis code for other specified arthritis, other site. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 553 through 554. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified joint disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Allergic arthritis
- Allergic arthritis of spine
- Arthritis of left sacroiliac joint
- Arthritis of pelvis
- Arthritis of right sacroiliac joint
- Arthritis of right sternoclavicular joint
- Arthritis of sacroiliac joint
- Arthritis of temporomandibular joint as part of polyarthritis
- Arthritis of temporomandibular joint caused by internal joint prosthesis
- Arthropathy due to hypersensitivity reaction
- Bilateral arthritis of sacroiliac joint
- Bilateral arthropathy of sacroiliac joints
- Bilateral sacroiliitis
- Climacteric arthritis
- Climacteric arthritis of spine
- Cricoarytenoid joint arthritis
- Intra-articular steroid-induced arthritis and periarthritis
- Lower limb joint arthritis
- Musculoskeletal disorder during menopause
- Osteoarthritis of temporomandibular joint
- Sacroiliitis of left sacroiliac joint
- Sacroiliitis of right sacroiliac joint
- Thoracic arthritis
- Traumatic arthritis of the temporomandibular joint
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M13.88: its own notes plus those printed at M13.8, M13, block M00-M25, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- Disorders affecting predominantly peripheral (limb) joints
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.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Arthritis
If you feel pain and stiffness in your body or have trouble moving around, you might have arthritis. Any disorder that affects the joints is often called arthritis. Joints are places where two bones meet, such as your elbow or knee.
The full article covers:
- What is arthritis?
- What are the types of arthritis?
- What are the symptoms of arthritis?
- Who is more likely to get arthritis?
- How is arthritis diagnosed?
- What are the treatments for arthritis?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M13.88 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M13.88Overview
What is the ICD-10 code for other specified arthritis, other site?
The ICD-10-CM code for other specified arthritis, other site is M13.88 (sometimes written as M1388). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M13.88 (Other specified arthritis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other specified arthritis, other site on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M13.88 group to?
When other specified arthritis, other site is the principal diagnosis on an inpatient stay, it groups to MS-DRG 554, 553, with relative weights from 0.8328 to 1.2492 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M13.88?
Under the General Equivalence Mappings, other specified arthritis, other site converts to ICD-9-CM 716.28 (allerg arthritis NEC). The mapping is approximate, so confirm the match fits the documentation.
