ICD-10 A35
Billable / Specific MCCOther tetanus
About ICD-10-CM A35
ICD-10-CM code A35 represents Other tetanus. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block A35). The 2026 edition of ICD-10-CM A35 became effective on October 1, 2025.
Coding Tips for A35
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
A35 is designated MCC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-MCC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag MCC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under A35. Per CMS ICD-10-CM Tabular 2026.
- Tetanus NOS
Type 1 Excludes
Pure excludes, these codes can never be coded together with A35. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- obstetrical tetanus (A34)
- tetanus neonatorum (A33)
Inpatient DRG Impact, MCC
codes Other tetanus. As a Major Complication/Comorbidity (MCC), this can shift the DRG assignment to a higher-weighted category, substantial reimbursement impact.
Medicare LCD Coverage for A35
Local Coverage Determinations (LCDs) from CMS MACs that list A35 as a covered diagnosis.
Showing top 10 of 215 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing A35.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with A35
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 95860 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95874 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95937 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- G0255 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95861 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95913 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95887 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95863 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95873 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
- 95909 CMS LCD: Billing and Coding: Nerve Conduction Studies and Electromyography CMS LCD
Convert A35 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 |
|---|---|---|
| A35 | 037 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To A35
Other codes in section A30-A49 (Other bacterial diseases).
ICD-10 A35, Billing FAQ
Is ICD-10 code A35 billable? +
Yes, A35 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to A35? +
ICD-10 A35 includes: Tetanus NOS.
What codes are Type 1 Excludes for A35? +
Type 1 Excludes (never code together with A35): obstetrical tetanus (A34); tetanus neonatorum (A33)
Is A35 a CC or MCC for inpatient DRG? +
Yes, this code is designated as MCC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with A35? +
Procedures frequently paired with A35 include: 95860, 95874, 95937, G0255, 95861.
What ICD-9 codes does A35 map to? +
Per CMS GEMs, A35 maps to ICD-9 codes: 037. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on August 30, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team