ICD-10 G89.21
Billable / SpecificChronic pain due to trauma
About ICD-10-CM G89.21
ICD-10-CM code G89.21 represents Chronic pain due to trauma. This is a billable/specific code in the Nervous System chapter (block G89). The 2026 edition of ICD-10-CM G89.21 became effective on October 1, 2025.
Medicare LCD Coverage for G89.21
Local Coverage Determinations (LCDs) from CMS MACs that list G89.21 as a covered diagnosis.
Showing top 10 of 127 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G89.21.
2 Aetna
1 Cigna
5 Medicare
CPT Codes Commonly Billed with G89.21
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 20526 Injection of joint or bursa for pain relief Pain Medicine
- 64470 Injection of anesthetic agent into facet joint Pain Medicine
- 64480 Injection of anesthetic agent into facet joint, lumbar or sacrum Pain Medicine
- 64640 Percutaneous implantation of neurostimulator electrodes Pain Medicine
- 64650 Percutaneous implantation of neurostimulator pulse generator Pain Medicine
- 64550 Implantation of spinal cord stimulator Pain Medicine
- 20520 Arthrocentesis, aspiration, and/or injection of joint or bursa Pain Medicine
- 20525 Injection of joint or bursa for pain relief, with fluoroscopic guidance Pain Medicine
- 20600 Arthrocentesis, aspiration, and/or injection of joint or bursa, with ultrasound guidance Pain Medicine
- 20610 Injection of joint or bursa for pain relief, with CT guidance Pain Medicine
Convert G89.21 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| G89.21 | 33821 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G89.21
Other codes in section G89-G99 (Other disorders of the nervous system).
ICD-10 G89.21, Billing FAQ
Is ICD-10 code G89.21 billable? +
Yes, G89.21 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with G89.21? +
Procedures frequently paired with G89.21 include: 20526, 64470, 64480, 64640, 64650.
What ICD-9 codes does G89.21 map to? +
Per CMS GEMs, G89.21 maps to ICD-9 codes: 33821. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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