2024 ICD-10-CM Diagnosis Code M08.1

Juvenile ankylosing spondylitis

ICD-10-CM Code:
M08.1
ICD-10 Code for:
Juvenile ankylosing spondylitis
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    (M00–M99)
    • Inflammatory polyarthropathies
      (M05-M14)
      • Juvenile arthritis
        (M08)

M08.1 is a billable diagnosis code used to specify a medical diagnosis of juvenile ankylosing spondylitis. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Ankylosing spondylitis
  • Ankylosing spondylitis
  • Ankylosing spondylitis
  • Ankylosing spondylitis with multisystem involvement
  • Ankylosing spondylitis with organ / system involvement
  • Axial spondyloarthritis
  • Axial spondyloarthritis
  • Axial spondyloarthritis
  • Axial spondyloarthritis
  • Axial spondyloarthritis
  • Juvenile ankylosing spondylitis
  • Juvenile spondyloarthropathy

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
Juvenile arthritisMUS004N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Spondylopathies/spondyloarthropathy (including infective)MUS011Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Clinical Information

  • Axial Spondyloarthritis

    a spectrum of chronic inflammatory conditions affecting the axial joints (e.g., spine), characterized by pain, stiffness of joints (ankylosis), reduced mobility and inflammation. when joint inflammation and damage are visible on regular x-rays it is called ankylosing spondylitis; otherwise it is referred to as non-radiographic axial spondyloarthritis. hla-b27 antigen is a biomarker and il-23/il-17 pathway a potential therapeutic target for axial and other related spondyloarthritis.
  • Non-Radiographic Axial Spondyloarthritis

    chronic inflammatory conditions affecting the axial joints which cannot be detectable on x-rays. it is characterized by pain, stiffness of joints and inflammation. non-radiographic axial spondyloarthritis can have symptoms onset before the age of 45 and progress to more severe ankylosing spondylitis over time.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • ankylosing spondylitis in adults M45.0

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert M08.1 to ICD-9-CM

  • ICD-9-CM Code: 720.0 - Ankylosing spondylitis
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Ankylosing Spondylitis

Ankylosing spondylitis is a type of arthritis of the spine. It causes inflammation between your vertebrae, which are the bones that make up your spine, and in the joints between your spine and pelvis. In some people, it can affect other joints.

AS is more common and more severe in men. It often runs in families. The cause is unknown, but it is likely that both genes and factors in the environment play a role.

Early symptoms of AS include back pain and stiffness. These problems often start in late adolescence or early adulthood. Over time, AS can fuse your vertebrae together, limiting movement. Some people have symptoms that come and go. Others have severe, ongoing pain.

A diagnosis of AS is based on your medical history and a physical examination. You may also have imaging or blood tests.

AS has no cure, but medicines can relieve symptoms and may keep the disease from getting worse. Eating a healthy diet, not smoking, and exercising can also help. In rare cases, you may need surgery to straighten the spine.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Disease


[Learn More in MedlinePlus]

Ankylosing spondylitis

Ankylosing spondylitis is a form of painful, ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine.  Early symptoms of ankylosing spondylitis typically begin between the ages of 15 and 30. Most commonly, affected individuals first experience chronic back pain and stiffness. This pain worsens with rest or inactivity, and tends to be relieved with physical activity or exercise.

Pain in ankylosing spondylitis results from inflammation of the joints between the pelvic bones (the ilia) and the base of the spine (the sacrum). These joints are called sacroiliac joints, and inflammation of these joints is known as sacroiliitis. The inflammation gradually spreads to the joints between the vertebrae, eventually involving the whole spine, causing a condition called spondylitis. Over time, back movement gradually becomes limited as the bones of the spine (vertebrae) fuse together. This progressive bony fusion is called ankylosis. These fused bones are prone to fracture.

Ankylosing spondylitis can involve other joints as well, including the shoulders, hips, and, less often, the knees. As the disease progresses, it can affect the joints between the spine and ribs, restricting movement of the chest and making it difficult to breathe deeply. 

Ankylosing spondylitis affects the eyes in more than 30 percent of cases, leading to episodes of eye inflammation called acute iritis. Acute iritis typically affects one eye at a time and causes eye pain and increased sensitivity to light (photophobia). Rarely, ankylosing spondylitis can also cause serious complications involving the heart, lungs, and nervous system. Six to 10 percent of people with ankylosing spondylitis have additional inflammatory disorders such as psoriasis, which affects the skin, or ulcerative colitis or Crohn's disease, which both affect the digestive tract.


[Learn More in MedlinePlus]

Ankylosing Spondylitis

Ankylosing spondylitis is a type of arthritis that causes inflammation in certain parts of the spine.
[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.