ICD-10 Code R07.9 – Chest Pain, Unspecified (2025 Billing & Coding Guide)

ICD-10 Code R07.9 is the billable diagnosis code for Chest Pain, Unspecified. This code is widely used across healthcare settings because chest pain is one of the most common patient complaints, and a potential symptom of life-threatening conditions.

Correct use of R07.9 is essential for both accurate clinical documentation and proper medical billing.

What is ICD-10 Code R07.9?

R07.9 Diagnosis Code: Chest pain, unspecified.
Billable: Yes – can be used for reimbursement.
ICD-9 Conversion: Replaces ICD-9 Code 786.5.

R07.9 Diagnosis Code Description

The code describes chest pain without a specified cause or location. Since chest pain can result from cardiac, pulmonary, gastrointestinal, or musculoskeletal issues, it is often used when the underlying cause is not yet determined.

Other synonyms and variations include:

Chest pain on exertion
Localized chest pain
Exertional chest pain
Chest tightness (unspecified)

When to Use R07.9 as a Primary Diagnosis Code

Yes, R07.9 can be a primary diagnosis code. It is frequently reported when chest pain is the main presenting symptom, especially in the emergency department (ED), urgent care, or outpatient settings, before further tests identify a more specific diagnosis.

Related ICD-10 Codes for Chest Pain

R07.1 – Chest pain on breathing
R07.2 – Precordial pain
R07.81 – Pleurodynia
R07.82 – Intercostal pain
R07.89 – Other chest pain
R52.9 – Pain, unspecified

Clinical Documentation Tips

For accurate coding and reduced denials:

Document onset, severity, duration, and characteristics of pain.
Note associated symptoms (e.g., dizziness, shortness of breath, fatigue).
Include risk factors (e.g., cardiac history, smoking, diabetes).
Update the diagnosis once the underlying cause is confirmed.

R07.9 Reimbursement & Billing Guidelines

Billable for reimbursement across Medicare, Medicaid, and private payers.
Often used in ED visits, outpatient encounters, and diagnostic workups.
Coverage depends on linking the code with medical necessity (e.g., ECG, chest X-ray, troponin labs).
Providers: Primary care, emergency physicians, cardiologists, hospitalists, and urgent care clinicians often report R07.9.

Common CPT/HCPCS Codes Billed with R07.9

93000 – Electrocardiogram (ECG)
71045 – Chest X-ray (single view)
84484 – Troponin test
99281–99285 – Emergency department E/M services

Final Thoughts

Accurate use of ICD-10 Code R07.9 ensures proper reimbursement and clear documentation for patients presenting with unspecified chest pain. Since this symptom can point to life-threatening conditions, coders and providers must use it carefully and update the diagnosis once the underlying cause is known.

Express Medical Billing Services (MBS), specialize in helping healthcare providers minimize claim denials and maximize reimbursement. Contact us today to streamline your ICD-10 coding and billing process.