Short answer · Medically reviewed summary · Last updated: 2026-04-07

The medical classification for Costochondritis and Tietze Syndrome falls under the ICD-10 code M94.0 (Chondrocostal junction syndrome), while the legacy ICD-9 classification for these conditions is 733.6. While Costochondritis and Tietze Syndrome are often grouped together in coding, they are clinically distinct entities that both involve inflammation of the costosternal joints. What is the difference between Costochondritis and Tietze Syndrome? Although they share ICD-10 and ICD-9 codes, it is important for patients to understand the clinical nuance between the two.

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ICD10 code of Costochondritis / Tietze Syndrome and ICD9 code

ICD-10 and ICD-9 codes for Costochondritis / Tietze Syndrome, with classification details for clinicians, coders and patients.

ICD9 and ICD10 codes of Costochondritis / Tietze Syndrome

The medical classification for Costochondritis and Tietze Syndrome falls under the ICD-10 code M94.0 (Chondrocostal junction syndrome), while the legacy ICD-9 classification for these conditions is 733.6. While Costochondritis and Tietze Syndrome are often grouped together in coding, they are clinically distinct entities that both involve inflammation of the costosternal joints.



What is the difference between Costochondritis and Tietze Syndrome?


Although they share ICD-10 and ICD-9 codes, it is important for patients to understand the clinical nuance between the two. Costochondritis is characterized by chest wall pain and tenderness in the costochondral junctions, but it typically presents without visible swelling. Conversely, Tietze Syndrome is a rarer inflammatory condition that specifically presents with localized, palpable swelling (edema) of the costosternal, sternoclavicular, or costochondral joints. Both conditions cause significant chest pain that can mimic cardiac issues, which is a major source of anxiety for the 171 members of our DiseaseMaps community who live with these diagnoses.



How are these conditions coded for medical billing?


In clinical practice, accurate coding is essential for insurance coverage and tracking the prevalence of chest wall pain syndromes. Because both conditions involve inflammation of the cartilage connecting the ribs to the sternum, they are captured under the following international standards:



  • ICD-10-CM Code: M94.0 – This covers "Chondrocostal junction syndrome," which is the primary classification for both Costochondritis and Tietze Syndrome.

  • ICD-9-CM Code: 733.6 – This was the historical code used for "Tietze's disease" or "Costochondritis" prior to the transition to ICD-10.



How is the diagnosis confirmed by physicians?


Because the pain associated with Costochondritis or Tietze Syndrome can feel like a heart attack, physicians must first rule out cardiac and pulmonary pathology. A diagnosis is primarily clinical, meaning your doctor will perform a physical examination to reproduce the pain by pressing on the affected costochondral joints. If the pain is reproduced by palpation, it strongly suggests a musculoskeletal origin rather than a cardiac one. In some cases, imaging like ultrasound or MRI may be used to distinguish Tietze Syndrome from Costochondritis by identifying the presence of localized soft tissue swelling.



What is the impact on daily living?


Living with Costochondritis or Tietze Syndrome can be emotionally taxing, especially when the pain is chronic. The uncertainty of chest pain often leads to frequent emergency room visits and significant psychological distress. Our clinical psychologists emphasize that while the condition is benign and not life-threatening, the impact on quality of life is real. Managing the anxiety associated with chest pain is a critical component of the treatment plan for many patients within the DiseaseMaps community.



Next steps



  • Consult a rheumatologist or a physiatrist to develop a personalized pain management plan, such as physical therapy or anti-inflammatory protocols.

  • Keep a symptom diary to identify triggers, such as specific physical activities or postural habits, that exacerbate your Costochondritis.

  • Join the DiseaseMaps community to connect with other individuals who understand the challenges of managing chronic chest wall inflammation.

  • If you experience new or worsening chest pain, shortness of breath, or radiation to the arm/jaw, seek immediate medical attention to rule out cardiac emergencies.



Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician with any questions regarding a medical condition.



References



  • NIH GARD (Genetic and Rare Diseases Information Center): Information on Costochondritis and Tietze Syndrome.

  • ICD-10 Data: Official classification for M94.0 (Chondrocostal junction syndrome).

  • PubMed: Clinical reviews on the differential diagnosis of chest wall pain.

  • Orphanet: Database for rare diseases and their associated codes.

Author: DiseaseMaps Editorial Team
Reviewed against authoritative medical sources (NIH GARD, Orphanet, OMIM)
Last updated: 2026-04-07
Medical disclaimer: This information does not substitute professional medical advice. Always consult your doctor before making health decisions.
Source: DiseaseMaps.org
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