ICD-10 code H91.3: Deaf nonspeaking, not elsewhere classified

Key Takeaways

ICD-10 code H91.3 is a billable diagnosis code for deaf nonspeaking, not elsewhere classified, valid for 2026 claims.

H91.3 sits under category H91 (Other and unspecified hearing loss) in Chapter 8 of ICD-10-CM; it has no laterality subcode.

The historical term deaf mutism maps directly to H91.3; prefer the current preferred terminology deaf nonspeaking in clinical documentation.

Pabau’s claims management software helps audiology and ENT practices submit H91.3 claims with complete documentation attached.

ICD-10 code H91.3 describes a patient who is deaf and nonspeaking, where the condition cannot be attributed to a more specific cause captured elsewhere in the classification. The “not elsewhere classified” qualifier means the coder has reviewed the full H90-H94 range and confirmed no more specific code applies. This code does not distinguish between congenital and acquired onset; both scenarios are valid under H91.3 when the clinical record documents the deaf-nonspeaking presentation.

The code belongs to ICD-10-CM Chapter 8: Diseases of the ear and mastoid process (H60-H95), within the block H90-H94 (Other disorders of ear), under category H91 (Other and unspecified hearing loss). It is a single terminal code with no laterality extensions, unlike most of the H90 range which differentiates right, left, and bilateral involvement.

Terminology note: Deaf mutism vs. deaf nonspeaking

Older documentation and ICD-9 crosswalk references use the term “deaf mutism.” Current ICD-10-CM editions use “deaf nonspeaking” as the preferred terminology. The change reflects the broader shift in clinical and community language away from the term “mute,” which many Deaf community members find stigmatizing. For clinical notes, consent forms, and insurance submissions, use deaf nonspeaking consistently. Pabau’s digital forms allow practices to update intake language across all templates from a single workflow, ensuring terminology stays current without manual revisions.

Billable status and reimbursement for H91.3

ICD-10 code H91.3 is a billable, specific code valid for 2026 diagnosis submission according to the CDC/NCHS ICD-10-CM tool. A billable code is one that carries enough clinical specificity to be used as the principal or secondary diagnosis on a claim without requiring a more granular subcode. Because H91.3 has no subcategory extensions, it is both the category code and the billable code.

Payers generally accept H91.3 as a valid diagnosis for audiology evaluations, hearing aid fittings, and speech-language therapy sessions where the patient’s deaf-nonspeaking status is clinically relevant. Using H91.3 accurately on claims helps practices avoid the automatic downcoding that some payers apply when they receive unspecified hearing loss codes. Practices that manage audiology billing through claims management software can attach supporting documentation directly to claims before submission, reducing denial rates.

ICD-10 code H91.3 coding guidelines and usage rules

Several ICD-10-CM Official Guidelines principles govern correct application of H91.3. Key rules include the following:

• Code to the highest level of specificity. Per ASHA’s ICD-10-CM coding guidance for audiologists and SLPs, clinicians should always select the most specific code available. If the type of hearing loss (conductive, sensorineural, or mixed) is documented, codes from H90.x are more specific and should be used instead of H91.3.
• Use H91.3 only when no more specific code applies. Review H90.3 (sensorineural hearing loss, bilateral), H91.0 (ototoxic hearing loss), H91.1 (presbycusis), H91.2 (sudden idiopathic hearing loss), and H91.8x (other specified hearing loss) before assigning H91.3.
• Secondary code pairing. When a patient has a cochlear implant, add a status code (e.g., Z96.21) alongside H91.3 to document the device. Speech therapy diagnoses such as R47.01 (aphasia) or R48.0 (dyslexia) may be coded additionally when they are the reason for the SLP visit.
• Principal vs. secondary sequencing. H91.3 may be the principal diagnosis for an audiology evaluation or a secondary diagnosis when the hearing loss accompanies another primary condition. Sequence according to the reason for the encounter.

Accurate sequencing reduces claim edits. Practices using structured clinical records that capture encounter reason at point of care make sequencing decisions faster and more defensible during audits.

H91.3 adjacent codes and when to use them

Choosing between H91.3 and adjacent codes depends on what the clinical documentation establishes about the nature and cause of hearing loss. The table below compares the most common alternatives:

The critical distinction between H91.3 and H91.9 (unspecified hearing loss) is the nonspeaking component. H91.9 documents a patient with unexplained hearing loss; H91.3 adds the clinical finding that the patient also does not use spoken language. This distinction affects both the clinical picture and, in some cases, payer coverage determinations for augmentative and alternative communication (AAC) services. Practices managing patients with complex communication profiles benefit from understanding how related neurodevelopmental ICD-10 codes interact with hearing diagnoses on multi-problem claims.

Documentation requirements for ICD-10 code H91.3

Strong documentation is the front line of reimbursement for any NEC code. For H91.3, payers and auditors expect clinical records to address three areas:

• Confirmed hearing loss. Audiometric test results (pure tone audiogram, speech audiometry, or ABR) should be present in the record. Document the degree of loss and, if established, whether it is congenital or acquired.
• Nonspeaking status. A clinical observation or functional communication assessment must establish that the patient does not use spoken language as a primary communication mode. Note the communication method used (sign language, AAC device, written communication).
• Rationale for NEC classification. State why the condition is not classifiable to a more specific code. This does not need to be lengthy; a brief clinical note referencing the absence of a documented etiology or specific hearing loss type is sufficient.

Structured intake and assessment templates streamline this documentation. Practices on Pabau can configure digital intake forms to capture communication mode, audiometric history, and prior diagnoses in a consistent format across all audiology and SLP encounters. The Echo AI clinical documentation tool can auto-populate structured SOAP notes from consultation audio, reducing transcription time while preserving the clinical detail payers require.

Document H91.3 claims with confidence

Pabau helps audiology and speech-language pathology practices capture the audiometric findings, nonspeaking-status notes, and NEC rationale that H91.3 claims require, then submit them with complete supporting documentation attached.

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ICD-9-CM to ICD-10-CM crosswalk for H91.3

Practices migrating legacy records or working with older data sets need the ICD-9 to ICD-10 mapping. ICD-9-CM code 389.7 (Deaf, nonspeaking, not elsewhere classifiable) translates directly to ICD-10-CM H91.3. This is a one-to-one crosswalk with no fractured mapping or combination code requirements. The ICD-9 terminology “not elsewhere classifiable” is equivalent to the ICD-10 “not elsewhere classified.” Both qualifiers serve the same purpose: Indicating the condition does not fit a more specific code in the system.

For research, quality reporting, or prior-period audits, the CMS ICD-10 codes page provides downloadable GEMs (General Equivalence Mappings) that document the full ICD-9 to ICD-10 crosswalk for audit trail purposes. Practices supporting multi-specialty billing, including speech therapy software workflows, benefit from tracking crosswalk decisions in the patient record when transitioning older case files.

Claim submission and payer considerations

Submitting H91.3 successfully requires attention to a few payer-specific patterns that affect audiology and SLP claims.

• Medicare coverage context. H91.3 supports medical necessity for audiologist evaluations (CPT 92550-92588), hearing aid fittings, and related services. Note that Medicare does not cover hearing aids, but the diagnostic evaluation itself is covered when H91.3 or a related hearing loss code establishes medical necessity. The AAPC Codify ICD-10-CM database provides linkage between H91.3 and covered CPT code ranges.
• Prior authorization. Some commercial payers require prior authorization for AAC devices or intensive speech therapy when driven by a deaf-nonspeaking diagnosis. Submit H91.3 with the functional communication assessment in the prior authorization package.
• Modifier use. When a modifier is needed to indicate a bilateral procedure performed on a patient with a unilateral documented condition, confirm the modifier is consistent with the absence of laterality coding in H91.3. Because H91.3 does not specify laterality, payer edits comparing laterality modifiers against laterality coding will not trigger.
• SLP claim pairings. According to ASHA coding guidance, SLPs should code the specific communication disorder that is the reason for the visit (e.g., R48.8 for other symbolic dysfunctions) as the principal diagnosis, with H91.3 as a secondary contributing condition when it is documented as clinically relevant to the treatment plan.

Practices managing claims where secondary diagnoses support primary diagnoses benefit from documentation workflows that flag missing secondary codes before claims are submitted. Pabau’s automated workflows can trigger pre-submission documentation checklists, prompting staff to confirm all supporting codes are present before a claim leaves the practice.

Audiology and SLP coding resources

Staying current with ICD-10-CM updates is an ongoing requirement for audiology and SLP billing staff. Several resources support accurate coding for H91.3 and the broader H91 category. The CDC/NCHS ICD-10-CM web tool provides the official code lookup with annual updates, Tabular List notes, and index entries. The WHO ICD-10 browser gives context on the international classification hierarchy. ASHA publishes an annual audiology-specific ICD-10 code list as a PDF, covering the most frequently used codes for audiologists and SLPs, including the H91 range. These resources, combined with structured clinical documentation, form the foundation of a defensible coding workflow.

For practices that want to centralize their coding reference workflow, Pabau’s client management tools allow care teams to attach coding guidance notes directly to service types, ensuring the right ICD-10 codes are visible at point of care without relying on memory or separate lookup tabs. Related ICD-10 coding for neurological conditions that may co-occur with hearing impairments is also available in Pabau’s coding reference library.

Conclusion

ICD-10 code H91.3 is a precise, billable diagnosis code for patients who are deaf and nonspeaking when no more specific classification applies. Correct application requires three things: Confirmed hearing loss in the clinical record, documented nonspeaking status, and a brief rationale for the NEC classification. Done right, H91.3 supports clean claims for audiology evaluations, hearing assessments, and speech-language therapy encounters.

Pabau’s clinical documentation features, including structured digital forms and the Echo AI note assistant, help audiology and SLP practices capture exactly the information payers need. To see how Pabau supports hearing health and speech-language therapy practices, book a demo.

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